120=(2x+x)

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Solution for 120=(2x+x) equation: 



120=(2x+x)

We move all terms to the left:

120-((2x+x))=0

We add all the numbers together, and all the variables

-((+3x))+120=0



We calculate terms in parentheses: -((+3x)), so:

(+3x)

We get rid of parentheses

3x

Back to the equation:

-(3x)



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

-3x=-120

x=-120/-3

x=+40

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