-7-2r=-r

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



-7-2r=-r

We move all terms to the left:

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

We add all the numbers together, and all the variables

-2r-(-1r)-7=0

We get rid of parentheses

-2r+1r-7=0

We add all the numbers together, and all the variables

-1r-7=0

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

-r=7

r=7/-1

r=-7

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