-8r=-7r-4

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Solution for -8r=-7r-4 equation: 



-8r=-7r-4

We move all terms to the left:

-8r-(-7r-4)=0

We get rid of parentheses

-8r+7r+4=0

We add all the numbers together, and all the variables

-1r+4=0

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

-r=-4

r=-4/-1

r=+4

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