20-4r=9(6r+8)

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Solution for 20-4r=9(6r+8) equation: 



20-4r=9(6r+8)

We move all terms to the left:

20-4r-(9(6r+8))=0



We calculate terms in parentheses: -(9(6r+8)), so:

9(6r+8)

We multiply parentheses

54r+72

Back to the equation:

-(54r+72)



We get rid of parentheses

-4r-54r-72+20=0

We add all the numbers together, and all the variables

-58r-52=0

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

-58r=52

r=52/-58

r=-26/29

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