-7x=84+x

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Solution for -7x=84+x equation: 



-7x=84+x

We move all terms to the left:

-7x-(84+x)=0

We add all the numbers together, and all the variables

-7x-(x+84)=0

We get rid of parentheses

-7x-x-84=0

We add all the numbers together, and all the variables

-8x-84=0

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

-8x=84

x=84/-8

x=-10+1/2

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