42=7(y-3)

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Solution for 42=7(y-3) equation: 



42=7(y-3)

We move all terms to the left:

42-(7(y-3))=0



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

7(y-3)

We multiply parentheses

7y-21

Back to the equation:

-(7y-21)



We get rid of parentheses

-7y+21+42=0

We add all the numbers together, and all the variables

-7y+63=0

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

-7y=-63

y=-63/-7

y=+9

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