3y+7=4y-8

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Solution for 3y+7=4y-8 equation: 



3y+7=4y-8

We move all terms to the left:

3y+7-(4y-8)=0

We get rid of parentheses

3y-4y+8+7=0

We add all the numbers together, and all the variables

-1y+15=0

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

-y=-15

y=-15/-1

y=+15

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