(r+13)/12=-1

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Solution for (r+13)/12=-1 equation: 



(r+13)/12=-1

We move all terms to the left:

(r+13)/12-(-1)=0

We add all the numbers together, and all the variables

(r+13)/12+1=0

We multiply all the terms by the denominator


(r+13)+1*12=0

We add all the numbers together, and all the variables

(r+13)+12=0

We get rid of parentheses

r+13+12=0

We add all the numbers together, and all the variables

r+25=0

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

r=-25

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