9(r-85)=45

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Solution for 9(r-85)=45 equation: 



9(r-85)=45

We move all terms to the left:

9(r-85)-(45)=0

We multiply parentheses

9r-765-45=0

We add all the numbers together, and all the variables

9r-810=0

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

9r=810

r=810/9

r=90

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