7=y+8y

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Solution for 7=y+8y equation: 



7=y+8y

We move all terms to the left:

7-(y+8y)=0

We add all the numbers together, and all the variables

-(+9y)+7=0

We get rid of parentheses

-9y+7=0

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

-9y=-7

y=-7/-9

y=7/9

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