4y+8=9y-7

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Solution for 4y+8=9y-7 equation: 



4y+8=9y-7

We move all terms to the left:

4y+8-(9y-7)=0

We get rid of parentheses

4y-9y+7+8=0

We add all the numbers together, and all the variables

-5y+15=0

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

-5y=-15

y=-15/-5

y=+3

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