-20-3r=20-8r

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Solution for -20-3r=20-8r equation: 



-20-3r=20-8r

We move all terms to the left:

-20-3r-(20-8r)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

-3r+8r-20-20=0

We add all the numbers together, and all the variables

5r-40=0

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

5r=40

r=40/5

r=8

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