9r-(5r+20)=8

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Solution for 9r-(5r+20)=8 equation: 



9r-(5r+20)=8

We move all terms to the left:

9r-(5r+20)-(8)=0

We get rid of parentheses

9r-5r-20-8=0

We add all the numbers together, and all the variables

4r-28=0

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

4r=28

r=28/4

r=7

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