-21+3r=5r+2

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Solution for -21+3r=5r+2 equation: 



-21+3r=5r+2

We move all terms to the left:

-21+3r-(5r+2)=0

We get rid of parentheses

3r-5r-2-21=0

We add all the numbers together, and all the variables

-2r-23=0

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

-2r=23

r=23/-2

r=-11+1/2

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