-3r+12+15=-5r+25

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Solution for -3r+12+15=-5r+25 equation: 



-3r+12+15=-5r+25

We move all terms to the left:

-3r+12+15-(-5r+25)=0

We add all the numbers together, and all the variables

-3r-(-5r+25)+27=0

We get rid of parentheses

-3r+5r-25+27=0

We add all the numbers together, and all the variables

2r+2=0

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

2r=-2

r=-2/2

r=-1

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