7-r=-r-r

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



7-r=-r-r

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-1r+2r+7=0

We add all the numbers together, and all the variables

r+7=0

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

r=-7

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