84=4(7-7x)

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



84=4(7-7x)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

4(-7x+7)

We multiply parentheses

-28x+28

Back to the equation:

-(-28x+28)



We get rid of parentheses

28x-28+84=0

We add all the numbers together, and all the variables

28x+56=0

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

28x=-56

x=-56/28

x=-2

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