42=12y-5y

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Solution for 42=12y-5y equation: 



42=12y-5y

We move all terms to the left:

42-(12y-5y)=0

We add all the numbers together, and all the variables

-(+7y)+42=0

We get rid of parentheses

-7y+42=0

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

-7y=-42

y=-42/-7

y=+6

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