9(s+3)=90

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Solution for 9(s+3)=90 equation: 



9(s+3)=90

We move all terms to the left:

9(s+3)-(90)=0

We multiply parentheses

9s+27-90=0

We add all the numbers together, and all the variables

9s-63=0

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

9s=63

s=63/9

s=7

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