(2y+21)+(5y+6)=90

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Solution for (2y+21)+(5y+6)=90 equation: 



(2y+21)+(5y+6)=90

We move all terms to the left:

(2y+21)+(5y+6)-(90)=0

We get rid of parentheses

2y+5y+21+6-90=0

We add all the numbers together, and all the variables

7y-63=0

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

7y=63

y=63/7

y=9

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