71=20+3r

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Solution for 71=20+3r equation: 



71=20+3r

We move all terms to the left:

71-(20+3r)=0

We add all the numbers together, and all the variables

-(3r+20)+71=0

We get rid of parentheses

-3r-20+71=0

We add all the numbers together, and all the variables

-3r+51=0

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

-3r=-51

r=-51/-3

r=+17

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