-r+3=2r-15

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Solution for -r+3=2r-15 equation: 



-r+3=2r-15

We move all terms to the left:

-r+3-(2r-15)=0

We add all the numbers together, and all the variables

-1r-(2r-15)+3=0

We get rid of parentheses

-1r-2r+15+3=0

We add all the numbers together, and all the variables

-3r+18=0

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

-3r=-18

r=-18/-3

r=+6

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