3y+(4y-7)=42

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Solution for 3y+(4y-7)=42 equation: 



3y+(4y-7)=42

We move all terms to the left:

3y+(4y-7)-(42)=0

We get rid of parentheses

3y+4y-7-42=0

We add all the numbers together, and all the variables

7y-49=0

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

7y=49

y=49/7

y=7

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