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

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Solution for (y-8)-(y+9)=4y equation: 



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-4y+y-y-8-9=0

We add all the numbers together, and all the variables

-4y-17=0

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

-4y=17

y=17/-4

y=-4+1/4

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