-1=2y+3(y-7)

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Solution for -1=2y+3(y-7) equation: 



-1=2y+3(y-7)

We move all terms to the left:

-1-(2y+3(y-7))=0



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

2y+3(y-7)

We multiply parentheses

2y+3y-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+21-1=0

We add all the numbers together, and all the variables

-5y+20=0

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

-5y=-20

y=-20/-5

y=+4

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