84=-6(2a-4)

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Solution for 84=-6(2a-4) equation: 



84=-6(2a-4)

We move all terms to the left:

84-(-6(2a-4))=0



We calculate terms in parentheses: -(-6(2a-4)), so:

-6(2a-4)

We multiply parentheses

-12a+24

Back to the equation:

-(-12a+24)



We get rid of parentheses

12a-24+84=0

We add all the numbers together, and all the variables

12a+60=0

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

12a=-60

a=-60/12

a=-5

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