40+(2x-30)+(x+20)=180

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Solution for 40+(2x-30)+(x+20)=180 equation: 



40+(2x-30)+(x+20)=180

We move all terms to the left:

40+(2x-30)+(x+20)-(180)=0

We add all the numbers together, and all the variables

(2x-30)+(x+20)-140=0

We get rid of parentheses

2x+x-30+20-140=0

We add all the numbers together, and all the variables

3x-150=0

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

3x=150

x=150/3

x=50

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