ok so am there 2 but there little and i been having trouble with them
a) simplify
12+3(2y-3)
b) factor the expression completely
18b - 12
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OpenStudy (anonymous):
@suckerofmath
OpenStudy (anonymous):
ok it cuase i didnt know if u got them by the text so i just put them here
OpenStudy (anonymous):
For that one, you use the distributive property to multiply the number in the ( ) by the number outside of it. So, you would multiply (3)(2y)+(3)(-3). Remember, a positive times a negative is a negative. Then, you would combine like terms.
OpenStudy (anonymous):
ok so it going to be
6 + 9 then or am i wrong ??
OpenStudy (anonymous):
Close. You have a (y) in the equation and you're multiplying a negative by a positive which gives you a negative number.
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OpenStudy (anonymous):
so it gonna be -6 + 9 = 3
OpenStudy (anonymous):
right ?? or na
OpenStudy (anonymous):
Close. You forgot your Y and the 9 should be negative. What's (3) x (2y)?
OpenStudy (anonymous):
it amm -6y ??
OpenStudy (anonymous):
You got the 6y but it should be positive. What's (3) x (-3)?
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OpenStudy (anonymous):
0
OpenStudy (anonymous):
??
OpenStudy (anonymous):
It would be 3 x -3. You're answer will be the opposite of 3 x 3 meaning you can multiply 3 x 3 make it negative.
OpenStudy (anonymous):
9 then
OpenStudy (anonymous):
Make it a negative.
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OpenStudy (anonymous):
-9
OpenStudy (anonymous):
Yes! Now you should have 12 - 9 + 6y
OpenStudy (anonymous):
ok
OpenStudy (anonymous):
Now you just combine like terms
OpenStudy (anonymous):
so now i subtract 12-9 = 3
3+6y =9y
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OpenStudy (anonymous):
is it right or not???
OpenStudy (anonymous):
The first thing you should do is 12 - 9
OpenStudy (anonymous):
ok wich is 3
OpenStudy (anonymous):
and then y combine the 3 with the 6y and sums up to 9y no ??
OpenStudy (anonymous):
I'm not sure where you got the 9y, sorry. After the 12 - 9, you should have 3 + 3y
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OpenStudy (anonymous):
oo ok ya i got confuse
OpenStudy (anonymous):
sorry
OpenStudy (anonymous):
It's alright. What do you think you do next?
OpenStudy (anonymous):
amm ad them up???
OpenStudy (anonymous):
*add
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OpenStudy (anonymous):
If both of them had a (y) you would do that. Since they don't, you get them y by it's self. So, you would subtract 3y from both sides, 3 + 3y - 3y = (0 - 3y)
OpenStudy (anonymous):
soo amm it 3y
OpenStudy (anonymous):
I'm not sure where you got that. You should end up with 3 = -3y
OpenStudy (anonymous):
ooo ok sorry
OpenStudy (anonymous):
It's alright. Now you just simplify the equation by dividing both sides by -3 to get -1 = y
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