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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-7y+y-y-3-4=0

We add all the numbers together, and all the variables

-7y-7=0

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

-7y=7

y=7/-7

y=-1

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