-8r+16=-40

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Solution for -8r+16=-40 equation: 



-8r+16=-40

We move all terms to the left:

-8r+16-(-40)=0

We add all the numbers together, and all the variables

-8r+56=0

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

-8r=-56

r=-56/-8

r=+7

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