r+15=4r-16

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Solution for r+15=4r-16 equation: 



r+15=4r-16

We move all terms to the left:

r+15-(4r-16)=0

We get rid of parentheses

r-4r+16+15=0

We add all the numbers together, and all the variables

-3r+31=0

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

-3r=-31

r=-31/-3

r=10+1/3

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