x+20=2(x+20)

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



x+20=2(x+20)

We move all terms to the left:

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



We calculate terms in parentheses: -(2(x+20)), so:

2(x+20)

We multiply parentheses

2x+40

Back to the equation:

-(2x+40)



We get rid of parentheses

x-2x-40+20=0

We add all the numbers together, and all the variables

-1x-20=0

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

-x=20

x=20/-1

x=-20

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