-8=4r-7

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Solution for -8=4r-7 equation: 



-8=4r-7

We move all terms to the left:

-8-(4r-7)=0

We get rid of parentheses

-4r+7-8=0

We add all the numbers together, and all the variables

-4r-1=0

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

-4r=1

r=1/-4

r=-1/4

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