2r+1-2r=-7-r

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



2r+1-2r=-7-r

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

1r+7+1=0

We add all the numbers together, and all the variables

r+8=0

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

r=-8

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