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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

x+(180-(2x+20))-140=0



We calculate terms in parentheses: +(180-(2x+20)), so:

180-(2x+20)

determiningTheFunctionDomain
-(2x+20)+180

We get rid of parentheses

-2x-20+180

We add all the numbers together, and all the variables

-2x+160

Back to the equation:

+(-2x+160)



We get rid of parentheses

x-2x+160-140=0

We add all the numbers together, and all the variables

-1x+20=0

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

-x=-20

x=-20/-1

x=+20

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