(7x-20)+(4x)+x=180

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Solution for (7x-20)+(4x)+x=180 equation: 



(7x-20)+(4x)+x=180

We move all terms to the left:

(7x-20)+(4x)+x-(180)=0

We add all the numbers together, and all the variables

5x+(7x-20)-180=0

We get rid of parentheses

5x+7x-20-180=0

We add all the numbers together, and all the variables

12x-200=0

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

12x=200

x=200/12

x=16+2/3

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