r-(-49)=70

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Solution for r-(-49)=70 equation: 



r-(-49)=70

We move all terms to the left:

r-(-49)-(70)=0

determiningTheFunctionDomain
r-70-(-49)=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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