r-2=-10-7r

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Solution for r-2=-10-7r equation: 



r-2=-10-7r

We move all terms to the left:

r-2-(-10-7r)=0

We add all the numbers together, and all the variables

r-(-7r-10)-2=0

We get rid of parentheses

r+7r+10-2=0

We add all the numbers together, and all the variables

8r+8=0

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

8r=-8

r=-8/8

r=-1

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