-84=-7(x-4)

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Solution for -84=-7(x-4) equation: 



-84=-7(x-4)

We move all terms to the left:

-84-(-7(x-4))=0



We calculate terms in parentheses: -(-7(x-4)), so:

-7(x-4)

We multiply parentheses

-7x+28

Back to the equation:

-(-7x+28)



We get rid of parentheses

7x-28-84=0

We add all the numbers together, and all the variables

7x-112=0

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

7x=112

x=112/7

x=16

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