4(82-3)=-9(12-4r)

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Solution for 4(82-3)=-9(12-4r) equation: 



4(82-3)=-9(12-4r)

We move all terms to the left:

4(82-3)-(-9(12-4r))=0

We add all the numbers together, and all the variables

-(-9(-4r+12))+479=0



We calculate terms in parentheses: -(-9(-4r+12)), so:

-9(-4r+12)

We multiply parentheses

36r-108

Back to the equation:

-(36r-108)



We get rid of parentheses

-36r+108+479=0

We add all the numbers together, and all the variables

-36r+587=0

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

-36r=-587

r=-587/-36

r=16+11/36

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