x-4=7x-84

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



x-4=7x-84

We move all terms to the left:

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

We get rid of parentheses

x-7x+84-4=0

We add all the numbers together, and all the variables

-6x+80=0

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

-6x=-80

x=-80/-6

x=13+1/3

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