r+(-2)=13

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Solution for r+(-2)=13 equation: 



r+(-2)=13

We move all terms to the left:

r+(-2)-(13)=0

determiningTheFunctionDomain
r-13+(-2)=0

We add all the numbers together, and all the variables

r-15=0

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

r=15

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