4y+7=y-8

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



4y+7=y-8

We move all terms to the left:

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

We get rid of parentheses

4y-y+8+7=0

We add all the numbers together, and all the variables

3y+15=0

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

3y=-15

y=-15/3

y=-5

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