20=(x+11)+2x

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Solution for 20=(x+11)+2x equation: 



20=(x+11)+2x

We move all terms to the left:

20-((x+11)+2x)=0



We calculate terms in parentheses: -((x+11)+2x), so:

(x+11)+2x

We add all the numbers together, and all the variables

2x+(x+11)

We get rid of parentheses

2x+x+11

We add all the numbers together, and all the variables

3x+11

Back to the equation:

-(3x+11)



We get rid of parentheses

-3x-11+20=0

We add all the numbers together, and all the variables

-3x+9=0

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

-3x=-9

x=-9/-3

x=+3

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