r-5r-8=-3r-7

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Solution for r-5r-8=-3r-7 equation: 



r-5r-8=-3r-7

We move all terms to the left:

r-5r-8-(-3r-7)=0

We add all the numbers together, and all the variables

-4r-(-3r-7)-8=0

We get rid of parentheses

-4r+3r+7-8=0

We add all the numbers together, and all the variables

-1r-1=0

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

-r=1

r=1/-1

r=-1

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