r-3=-15+2r+5r

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Solution for r-3=-15+2r+5r equation: 



r-3=-15+2r+5r

We move all terms to the left:

r-3-(-15+2r+5r)=0

We add all the numbers together, and all the variables

r-(7r-15)-3=0

We get rid of parentheses

r-7r+15-3=0

We add all the numbers together, and all the variables

-6r+12=0

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

-6r=-12

r=-12/-6

r=+2

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