-1+2r=-7+8r

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Solution for -1+2r=-7+8r equation: 



-1+2r=-7+8r

We move all terms to the left:

-1+2r-(-7+8r)=0

We add all the numbers together, and all the variables

2r-(8r-7)-1=0

We get rid of parentheses

2r-8r+7-1=0

We add all the numbers together, and all the variables

-6r+6=0

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

-6r=-6

r=-6/-6

r=1

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