Datasets:
NationalTutoringObservatory
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MathEd-PII

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8
volunteer
so if you multiply the left side by 5/4..what do you get?
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volunteer
do you understand?
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student
Yes.
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volunteer
please show me on the board
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student
5/8?
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volunteer
You are missing something?
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volunteer
is it 1/2 or ?
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student
-1/2
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volunteer
correct
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volunteer
so now since you multiplied on the left by 5/4, you must do the same on the right side
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volunteer
so what is the final answer?
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volunteer
what does x=?
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volunteer
Great job....
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volunteer
did all of that make sense?
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student
Im confused, what do I do with the 1x and the -5/8?
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volunteer
1x = x
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student
Oh
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volunteer
the answer would be...
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student
-5/8
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volunteer
yup
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volunteer
do u know how to check to see if your answer is right?
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student
No
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volunteer
so please right the original problem again
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volunteer
awesome
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volunteer
now everywhere you see an x, substitute it with -5/8
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volunteer
and solve the equation
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volunteer
what did u get?
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student
-5/8
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volunteer
let me delete that, that ok?
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student
Yes.
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volunteer
not much room to draw
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student
Im sorry
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volunteer
no problem
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volunteer
can u please write the problem again at the top of the page please
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student
yes
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volunteer
ok, solve the left side of the equation only for x=-5/8 please
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student
ok
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volunteer
so what answer do u get for the left side of the equation?
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student
-10/40 x
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volunteer
you have to remember that there is no longer an x since you substituted a number
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volunteer
also you forgot to include the -1/2
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student
oh oops
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student
when you subtract fractions, do you go straight across?
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volunteer
you can only go straight across if they have the same common denominator
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student
ok
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volunteer
what is the common denominator?
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student
20?
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volunteer
why?
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student
What happens when you don't have the same common denominator?
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volunteer
you have to find a number which is common for both?
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volunteer
You have to find a number which is common for both
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volunteer
what is the smallest number that is common to both numbers?
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student
10?
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volunteer
40 is the smallest number
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volunteer
is 40 divisible by 40?
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student
yes
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volunteer
is 40 divisible by 2?
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student
I think so.
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volunteer
yes it is
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volunteer
so if 40 is the common denominator, please solve the equation
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volunteer
don't solve it..write down all the steps to get the number for the numerator please
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student
Can you show me how?
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volunteer
if you divide 40 by 40, what do u get?
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student
1
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volunteer
correct
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volunteer
if you divide 40 by 2..what do you get?
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student
20
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volunteer
correct
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volunteer
does that make sense?
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student
yes
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volunteer
so the left side of the original equation is equal to -30/40
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volunteer
now we have to solve the right side of the original please solve
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student
ok
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student
i got the same answer.
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volunteer
So that means the answer you got for x is correct
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volunteer
does that make sense?
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student
Yes, thank you
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volunteer
do you remember the value for x?
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student
-5/8
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volunteer
yup
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volunteer
you will need to practice getting the common denominator though
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student
i will
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volunteer
great...hopefully u learned something
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student
i did thank you for teaching me
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volunteer
no problem. anything else?
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student
no it was just that question.
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volunteer
awesome..goodnight
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student
goodnight
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volunteer
Another way to find the common denominator is to multiply the two numbers together. If you remember from our session, we had 40 and 2 in the denominator. We could have simply used 40*2=80 as the common denominator and then solved the fraction. Then you would need to simplify the fraction. Hopefully this makes sense...
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volunteer
Okay, how about now?
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student
Yes!
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volunteer
Sweet !
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volunteer
Okay, so now maybe you post/draw somethign and see if it's working both ways?
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student
Okay so basically in class we are doing review of algebra 1 but i have some gaps from that class and also it was 3 years ago so im struggling with simple concepts
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volunteer
Okey dokey.
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volunteer
Any particular topic then you want to review?
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student
i started a problem just now but the tutor person was being unresponsive so i can show you what i have so far
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volunteer
Okey dokey.
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student
Here’s the problem, im on #35
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volunteer
I see it !
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