-84=-4(4r-3)

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Solution for -84=-4(4r-3) equation: 



-84=-4(4r-3)

We move all terms to the left:

-84-(-4(4r-3))=0



We calculate terms in parentheses: -(-4(4r-3)), so:

-4(4r-3)

We multiply parentheses

-16r+12

Back to the equation:

-(-16r+12)



We get rid of parentheses

16r-12-84=0

We add all the numbers together, and all the variables

16r-96=0

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

16r=96

r=96/16

r=6

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