9(a+8)=90

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Solution for 9(a+8)=90 equation: 



9(a+8)=90

We move all terms to the left:

9(a+8)-(90)=0

We multiply parentheses

9a+72-90=0

We add all the numbers together, and all the variables

9a-18=0

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

9a=18

a=18/9

a=2

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