8y+-9y=-1y-1y=9y+-9y

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Solution for 8y+-9y=-1y-1y=9y+-9y equation: 



8y+-9y=-1y-1y=9y+-9y

We move all terms to the left:

8y+-9y-(-1y-1y)=0

We add all the numbers together, and all the variables

8y-9y-(-2y)+=0

We add all the numbers together, and all the variables

-1y-(-2y)=0

We get rid of parentheses

-1y+2y=0

We add all the numbers together, and all the variables

y=0

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