(7y+5)+(5y+7)=84

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Solution for (7y+5)+(5y+7)=84 equation: 



(7y+5)+(5y+7)=84

We move all terms to the left:

(7y+5)+(5y+7)-(84)=0

We get rid of parentheses

7y+5y+5+7-84=0

We add all the numbers together, and all the variables

12y-72=0

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

12y=72

y=72/12

y=6

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