-9(1+r)=63

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Solution for -9(1+r)=63 equation: 



-9(1+r)=63

We move all terms to the left:

-9(1+r)-(63)=0

We add all the numbers together, and all the variables

-9(r+1)-63=0

We multiply parentheses

-9r-9-63=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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