20-8r=5(5r+4)+4r

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Solution for 20-8r=5(5r+4)+4r equation: 



20-8r=5(5r+4)+4r

We move all terms to the left:

20-8r-(5(5r+4)+4r)=0



We calculate terms in parentheses: -(5(5r+4)+4r), so:

5(5r+4)+4r

We add all the numbers together, and all the variables

4r+5(5r+4)

We multiply parentheses

4r+25r+20

We add all the numbers together, and all the variables

29r+20

Back to the equation:

-(29r+20)



We get rid of parentheses

-8r-29r-20+20=0

We add all the numbers together, and all the variables

-37r=0

r=0/-37

r=0

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