-4(-4r=9)+-8=-8r+100

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Solution for -4(-4r=9)+-8=-8r+100 equation: 



-4(-4r=9)+-8=-8r+100

We move all terms to the left:

-4(-4r-(9)+-8)=0

We add all the numbers together, and all the variables

-4(-4r-17)=0

We multiply parentheses

16r+68=0

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

16r=-68

r=-68/16

r=-4+1/4

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