31=7(y+3)-2y

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Solution for 31=7(y+3)-2y equation: 



31=7(y+3)-2y

We move all terms to the left:

31-(7(y+3)-2y)=0



We calculate terms in parentheses: -(7(y+3)-2y), so:

7(y+3)-2y

We add all the numbers together, and all the variables

-2y+7(y+3)

We multiply parentheses

-2y+7y+21

We add all the numbers together, and all the variables

5y+21

Back to the equation:

-(5y+21)



We get rid of parentheses

-5y-21+31=0

We add all the numbers together, and all the variables

-5y+10=0

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

-5y=-10

y=-10/-5

y=+2

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