2r-(r-8)=-7

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Solution for 2r-(r-8)=-7 equation: 



2r-(r-8)=-7

We move all terms to the left:

2r-(r-8)-(-7)=0

We add all the numbers together, and all the variables

2r-(r-8)+7=0

We get rid of parentheses

2r-r+8+7=0

We add all the numbers together, and all the variables

r+15=0

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

r=-15

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