8x=84-4x

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Solution for 8x=84-4x equation: 



8x=84-4x

We move all terms to the left:

8x-(84-4x)=0

We add all the numbers together, and all the variables

8x-(-4x+84)=0

We get rid of parentheses

8x+4x-84=0

We add all the numbers together, and all the variables

12x-84=0

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

12x=84

x=84/12

x=7

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