9y+1=2y-20

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Solution for 9y+1=2y-20 equation: 



9y+1=2y-20

We move all terms to the left:

9y+1-(2y-20)=0

We get rid of parentheses

9y-2y+20+1=0

We add all the numbers together, and all the variables

7y+21=0

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

7y=-21

y=-21/7

y=-3

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