9(r+2)=90

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Solution for 9(r+2)=90 equation: 



9(r+2)=90

We move all terms to the left:

9(r+2)-(90)=0

We multiply parentheses

9r+18-90=0

We add all the numbers together, and all the variables

9r-72=0

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

9r=72

r=72/9

r=8

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