-20-2r=8(r+1)-3r

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Solution for -20-2r=8(r+1)-3r equation: 



-20-2r=8(r+1)-3r

We move all terms to the left:

-20-2r-(8(r+1)-3r)=0



We calculate terms in parentheses: -(8(r+1)-3r), so:

8(r+1)-3r

We add all the numbers together, and all the variables

-3r+8(r+1)

We multiply parentheses

-3r+8r+8

We add all the numbers together, and all the variables

5r+8

Back to the equation:

-(5r+8)



We get rid of parentheses

-2r-5r-8-20=0

We add all the numbers together, and all the variables

-7r-28=0

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

-7r=28

r=28/-7

r=-4

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