12y-42=15y+18

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Solution for 12y-42=15y+18 equation: 



12y-42=15y+18

We move all terms to the left:

12y-42-(15y+18)=0

We get rid of parentheses

12y-15y-18-42=0

We add all the numbers together, and all the variables

-3y-60=0

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

-3y=60

y=60/-3

y=-20

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