3x-(x+20)=180

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Solution for 3x-(x+20)=180 equation: 



3x-(x+20)=180

We move all terms to the left:

3x-(x+20)-(180)=0

We get rid of parentheses

3x-x-20-180=0

We add all the numbers together, and all the variables

2x-200=0

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

2x=200

x=200/2

x=100

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