-2+7=-r

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Solution for -2+7=-r equation: 



-2+7=-r

We move all terms to the left:

-2+7-(-r)=0

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

-(-1r)+5=0

We get rid of parentheses

1r+5=0

We add all the numbers together, and all the variables

r+5=0

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

r=-5

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