180=(2x+21)+x

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Solution for 180=(2x+21)+x equation: 



180=(2x+21)+x

We move all terms to the left:

180-((2x+21)+x)=0



We calculate terms in parentheses: -((2x+21)+x), so:

(2x+21)+x

We add all the numbers together, and all the variables

x+(2x+21)

We get rid of parentheses

x+2x+21

We add all the numbers together, and all the variables

3x+21

Back to the equation:

-(3x+21)



We get rid of parentheses

-3x-21+180=0

We add all the numbers together, and all the variables

-3x+159=0

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

-3x=-159

x=-159/-3

x=+53

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