8-7y=-9y

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Solution for 8-7y=-9y equation: 



8-7y=-9y

We move all terms to the left:

8-7y-(-9y)=0

We get rid of parentheses

-7y+9y+8=0

We add all the numbers together, and all the variables

2y+8=0

We move all terms containing y to the left, all other terms to the right

2y=-8

y=-8/2

y=-4

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