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8
volunteer
Thats why here we have -1
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volunteer
All good with that?
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student
Yes
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student
Is the answer -15
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volunteer
yeah the final answer is -15
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volunteer
You got it in the end :)
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student
W=-8
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volunteer
Yes!
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volunteer
Okay let's start with -1^2
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student
Are we on 6
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student
Yes or no
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volunteer
Not yet, we're on 5
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volunteer
Do you know how to calculate -1 squared?
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student
M=3
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volunteer
Not quite, let's take it step by step
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volunteer
What is -1 squared
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student
Do we follow pemdas
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volunteer
Yes, so we first want to see what -1 squared is
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student
And it is 1
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volunteer
Yes
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volunteer
So we have 3 x 1
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student
3
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volunteer
Now we have -(-1) which would be
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student
1
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volunteer
Yes
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student
2
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volunteer
And now we just have -7
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volunteer
So what is 4 - 7?
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student
-3
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student
M=-3
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volunteer
Yes!
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volunteer
Awesome
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volunteer
Do you have an idea how you would write an algebraic equation for 6?
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volunteer
Just the equation for now, without solving it yet
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student
No
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student
No
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student
No
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volunteer
Okay
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student
Wait
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volunteer
Let's make p stand for pineapples and m stand for mango
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volunteer
Okay
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student
No
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student
You can continue
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volunteer
Okay
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volunteer
So we want to just focus on this part for now
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volunteer
we have p and m and we know that there are 8 less p than m
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volunteer
How could we write that out?
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student
8=P-8
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student
No m=p-8
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volunteer
Good thinking but not quite
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volunteer
We do use the subtraction that's true
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volunteer
What would we do to m to make it the same number as p
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student
-
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volunteer
which one would you pick a or b
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student
What is a
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student
And whaat is b
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volunteer
a) p = m + 8 pr b) p = m -8
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student
B
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student
B
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student
B
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student
B
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student
B
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student
B
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student
B
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student
B
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student
B
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student
B
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volunteer
Yes
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student
B
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volunteer
Okay let's go through the difference between your answer and b before we move forward
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volunteer
Let's say p is 10
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student
We just need the eq
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student
But yes
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volunteer
Yes but what we need more importantly, is for you to understand how to get there without my help so you can be ready for class and tests
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volunteer
So with your equation we have that m is 2 and p is 10
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volunteer
But does this satisfy our original rule that p has 8 less than m?
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student
Yes
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student
Yes
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student
Yes
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volunteer
But is m is 2, then it's m that's 8 less than m
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student
Nod
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volunteer
But what we need, is p to be eight digits smaller than m
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volunteer
So what do we change to your equation, to make sure that p is eight smaller than m instead
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student
P+8
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volunteer
Yes that works!
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volunteer
Awesome
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student
Now i think i have an eq for 7
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volunteer
Okay, great type it out for me
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student
J=(b-12)divide 2
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volunteer
Yeah that's right
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volunteer
Do you want to go over how you calculated that
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student
That becomes the - and the divide
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volunteer
Yup
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volunteer
Great work!
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student
The answer key says it is b=2j+12
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volunteer
I feel like you're doing really well with these. My advice would be to double check as you're going along because one small blunder can impact the whole equation, and have more confidence
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volunteer
Yes b = 2j + 12 is your equation rearranged
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student
Which is the opposite
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volunteer
Do you want me to show you how to rearrange it into the answer guide
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student
You just flip the signs into + and x
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