3y+18=42-3y

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Solution for 3y+18=42-3y equation: 



3y+18=42-3y

We move all terms to the left:

3y+18-(42-3y)=0

We add all the numbers together, and all the variables

3y-(-3y+42)+18=0

We get rid of parentheses

3y+3y-42+18=0

We add all the numbers together, and all the variables

6y-24=0

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

6y=24

y=24/6

y=4

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