-8r-4=-84

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Solution for -8r-4=-84 equation: 



-8r-4=-84

We move all terms to the left:

-8r-4-(-84)=0

We add all the numbers together, and all the variables

-8r+80=0

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

-8r=-80

r=-80/-8

r=+10

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