2x+(x+20)=100

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Solution for 2x+(x+20)=100 equation: 



2x+(x+20)=100

We move all terms to the left:

2x+(x+20)-(100)=0

We get rid of parentheses

2x+x+20-100=0

We add all the numbers together, and all the variables

3x-80=0

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

3x=80

x=80/3

x=26+2/3

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