r+15=4r-1

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Solution for r+15=4r-1 equation: 



r+15=4r-1

We move all terms to the left:

r+15-(4r-1)=0

We get rid of parentheses

r-4r+1+15=0

We add all the numbers together, and all the variables

-3r+16=0

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

-3r=-16

r=-16/-3

r=5+1/3

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