2r-r-7=3+3r

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Solution for 2r-r-7=3+3r equation: 



2r-r-7=3+3r

We move all terms to the left:

2r-r-7-(3+3r)=0

We add all the numbers together, and all the variables

2r-r-(3r+3)-7=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

r-3r-3-7=0

We add all the numbers together, and all the variables

-2r-10=0

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

-2r=10

r=10/-2

r=-5

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