57=-5r+2r

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Solution for 57=-5r+2r equation: 



57=-5r+2r

We move all terms to the left:

57-(-5r+2r)=0

We add all the numbers together, and all the variables

-(-3r)+57=0

We get rid of parentheses

3r+57=0

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

3r=-57

r=-57/3

r=-19

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