9(r-90)=72

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Solution for 9(r-90)=72 equation: 



9(r-90)=72

We move all terms to the left:

9(r-90)-(72)=0

We multiply parentheses

9r-810-72=0

We add all the numbers together, and all the variables

9r-882=0

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

9r=882

r=882/9

r=98

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