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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

7x+(5x+40)-160=0

We get rid of parentheses

7x+5x+40-160=0

We add all the numbers together, and all the variables

12x-120=0

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

12x=120

x=120/12

x=10

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