-137=4r-5(5+4r)

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Solution for -137=4r-5(5+4r) equation: 



-137=4r-5(5+4r)

We move all terms to the left:

-137-(4r-5(5+4r))=0

We add all the numbers together, and all the variables

-(4r-5(4r+5))-137=0



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

4r-5(4r+5)

We multiply parentheses

4r-20r-25

We add all the numbers together, and all the variables

-16r-25

Back to the equation:

-(-16r-25)



We get rid of parentheses

16r+25-137=0

We add all the numbers together, and all the variables

16r-112=0

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

16r=112

r=112/16

r=7

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