2y+30=9y-40

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Solution for 2y+30=9y-40 equation: 



2y+30=9y-40

We move all terms to the left:

2y+30-(9y-40)=0

We get rid of parentheses

2y-9y+40+30=0

We add all the numbers together, and all the variables

-7y+70=0

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

-7y=-70

y=-70/-7

y=+10

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