3=2y+7y

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Solution for 3=2y+7y equation: 



3=2y+7y

We move all terms to the left:

3-(2y+7y)=0

We add all the numbers together, and all the variables

-(+9y)+3=0

We get rid of parentheses

-9y+3=0

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

-9y=-3

y=-3/-9

y=1/3

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