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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

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

We add all the numbers together, and all the variables

5x-140=0

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

5x=140

x=140/5

x=28

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