(3y+4)+(7y-8)=86

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Solution for (3y+4)+(7y-8)=86 equation: 



(3y+4)+(7y-8)=86

We move all terms to the left:

(3y+4)+(7y-8)-(86)=0

We get rid of parentheses

3y+7y+4-8-86=0

We add all the numbers together, and all the variables

10y-90=0

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

10y=90

y=90/10

y=9

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