-8(r+7)-r=-128

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Solution for -8(r+7)-r=-128 equation: 



-8(r+7)-r=-128

We move all terms to the left:

-8(r+7)-r-(-128)=0

We add all the numbers together, and all the variables

-1r-8(r+7)+128=0

We multiply parentheses

-1r-8r-56+128=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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