r+(-4)=16

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Solution for r+(-4)=16 equation: 



r+(-4)=16

We move all terms to the left:

r+(-4)-(16)=0

determiningTheFunctionDomain
r-16+(-4)=0

We add all the numbers together, and all the variables

r-20=0

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

r=20

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