2(x+20)+2x=640

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Solution for 2(x+20)+2x=640 equation: 



2(x+20)+2x=640

We move all terms to the left:

2(x+20)+2x-(640)=0

We add all the numbers together, and all the variables

2x+2(x+20)-640=0

We multiply parentheses

2x+2x+40-640=0

We add all the numbers together, and all the variables

4x-600=0

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

4x=600

x=600/4

x=150

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