-13=r/7+8

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Solution for -13=r/7+8 equation: 



-13=r/7+8

We move all terms to the left:

-13-(r/7+8)=0

We get rid of parentheses

-r/7-8-13=0

We multiply all the terms by the denominator


-r-8*7-13*7=0

We add all the numbers together, and all the variables

-1r-147=0

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

-r=147

r=147/-1

r=-147

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