7(r-90)=63

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Solution for 7(r-90)=63 equation: 



7(r-90)=63

We move all terms to the left:

7(r-90)-(63)=0

We multiply parentheses

7r-630-63=0

We add all the numbers together, and all the variables

7r-693=0

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

7r=693

r=693/7

r=99

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