84=28-4x

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Solution for 84=28-4x equation: 



84=28-4x

We move all terms to the left:

84-(28-4x)=0

We add all the numbers together, and all the variables

-(-4x+28)+84=0

We get rid of parentheses

4x-28+84=0

We add all the numbers together, and all the variables

4x+56=0

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

4x=-56

x=-56/4

x=-14

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