(7x-20)+(5x-40)=180

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Solution for (7x-20)+(5x-40)=180 equation: 



(7x-20)+(5x-40)=180

We move all terms to the left:

(7x-20)+(5x-40)-(180)=0

We get rid of parentheses

7x+5x-20-40-180=0

We add all the numbers together, and all the variables

12x-240=0

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

12x=240

x=240/12

x=20

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