3x+(x+20)+120=180

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Solution for 3x+(x+20)+120=180 equation: 



3x+(x+20)+120=180

We move all terms to the left:

3x+(x+20)+120-(180)=0

We add all the numbers together, and all the variables

3x+(x+20)-60=0

We get rid of parentheses

3x+x+20-60=0

We add all the numbers together, and all the variables

4x-40=0

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

4x=40

x=40/4

x=10

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