9(10+r)=63

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Solution for 9(10+r)=63 equation: 



9(10+r)=63

We move all terms to the left:

9(10+r)-(63)=0

We add all the numbers together, and all the variables

9(r+10)-63=0

We multiply parentheses

9r+90-63=0

We add all the numbers together, and all the variables

9r+27=0

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

9r=-27

r=-27/9

r=-3

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