-8r-5r=13

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Solution for -8r-5r=13 equation: 



-8r-5r=13

We move all terms to the left:

-8r-5r-(13)=0

We add all the numbers together, and all the variables

-13r-13=0

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

-13r=13

r=13/-13

r=-1

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