9y+20=8y-20

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Solution for 9y+20=8y-20 equation: 



9y+20=8y-20

We move all terms to the left:

9y+20-(8y-20)=0

We get rid of parentheses

9y-8y+20+20=0

We add all the numbers together, and all the variables

y+40=0

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

y=-40

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