120+(x+20)=180

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



120+(x+20)=180

We move all terms to the left:

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

We add all the numbers together, and all the variables

(x+20)-60=0

We get rid of parentheses

x+20-60=0

We add all the numbers together, and all the variables

x-40=0

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

x=40

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