(x-20)+(x+40)=180

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Solution for (x-20)+(x+40)=180 equation: 



(x-20)+(x+40)=180

We move all terms to the left:

(x-20)+(x+40)-(180)=0

We get rid of parentheses

x+x-20+40-180=0

We add all the numbers together, and all the variables

2x-160=0

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

2x=160

x=160/2

x=80

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