42=3y+y

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Solution for 42=3y+y equation: 



42=3y+y

We move all terms to the left:

42-(3y+y)=0

We add all the numbers together, and all the variables

-(+4y)+42=0

We get rid of parentheses

-4y+42=0

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

-4y=-42

y=-42/-4

y=10+1/2

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