-5+8(r+4)=91

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Solution for -5+8(r+4)=91 equation: 



-5+8(r+4)=91

We move all terms to the left:

-5+8(r+4)-(91)=0

We add all the numbers together, and all the variables

8(r+4)-96=0

We multiply parentheses

8r+32-96=0

We add all the numbers together, and all the variables

8r-64=0

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

8r=64

r=64/8

r=8

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