(105-x)=(2x+84)

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Solution for (105-x)=(2x+84) equation: 



(105-x)=(2x+84)

We move all terms to the left:

(105-x)-((2x+84))=0

We add all the numbers together, and all the variables

(-1x+105)-((2x+84))=0

We get rid of parentheses

-1x-((2x+84))+105=0



We calculate terms in parentheses: -((2x+84)), so:

(2x+84)

We get rid of parentheses

2x+84

Back to the equation:

-(2x+84)



We get rid of parentheses

-1x-2x-84+105=0

We add all the numbers together, and all the variables

-3x+21=0

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

-3x=-21

x=-21/-3

x=+7

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