-7-8=-2-7r

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



-7-8=-2-7r

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

-(-7r-2)-15=0

We get rid of parentheses

7r+2-15=0

We add all the numbers together, and all the variables

7r-13=0

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

7r=13

r=13/7

r=1+6/7

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