2(20)=2x+40

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Solution for 2(20)=2x+40 equation: 



2(20)=2x+40

We move all terms to the left:

2(20)-(2x+40)=0

We get rid of parentheses

-2x-40+220=0

We add all the numbers together, and all the variables

-2x+180=0

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

-2x=-180

x=-180/-2

x=+90

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