-20+7r=4(r-8)

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Solution for -20+7r=4(r-8) equation: 



-20+7r=4(r-8)

We move all terms to the left:

-20+7r-(4(r-8))=0



We calculate terms in parentheses: -(4(r-8)), so:

4(r-8)

We multiply parentheses

4r-32

Back to the equation:

-(4r-32)



We get rid of parentheses

7r-4r+32-20=0

We add all the numbers together, and all the variables

3r+12=0

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

3r=-12

r=-12/3

r=-4

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