84=7(4-x)

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



84=7(4-x)

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(7(-1x+4))+84=0



We calculate terms in parentheses: -(7(-1x+4)), so:

7(-1x+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+56=0

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

7x=-56

x=-56/7

x=-8

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