-5(10r-4)=9(-8r-10)

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Solution for -5(10r-4)=9(-8r-10) equation: 



-5(10r-4)=9(-8r-10)

We move all terms to the left:

-5(10r-4)-(9(-8r-10))=0

We multiply parentheses

-50r-(9(-8r-10))+20=0



We calculate terms in parentheses: -(9(-8r-10)), so:

9(-8r-10)

We multiply parentheses

-72r-90

Back to the equation:

-(-72r-90)



We get rid of parentheses

-50r+72r+90+20=0

We add all the numbers together, and all the variables

22r+110=0

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

22r=-110

r=-110/22

r=-5

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