r+(-19)=2

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Solution for r+(-19)=2 equation: 



r+(-19)=2

We move all terms to the left:

r+(-19)-(2)=0

determiningTheFunctionDomain
r-2+(-19)=0

We add all the numbers together, and all the variables

r-21=0

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

r=21

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