-8=r+4

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Solution for -8=r+4 equation: 



-8=r+4

We move all terms to the left:

-8-(r+4)=0

We get rid of parentheses

-r-4-8=0

We add all the numbers together, and all the variables

-1r-12=0

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

-r=12

r=12/-1

r=-12

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