-8r=2r+20

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Solution for -8r=2r+20 equation: 



-8r=2r+20

We move all terms to the left:

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

We get rid of parentheses

-8r-2r-20=0

We add all the numbers together, and all the variables

-10r-20=0

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

-10r=20

r=20/-10

r=-2

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