180=(3x+5)+(4x-5)+40

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Solution for 180=(3x+5)+(4x-5)+40 equation: 



180=(3x+5)+(4x-5)+40

We move all terms to the left:

180-((3x+5)+(4x-5)+40)=0



We calculate terms in parentheses: -((3x+5)+(4x-5)+40), so:

(3x+5)+(4x-5)+40

We get rid of parentheses

3x+4x+5-5+40

We add all the numbers together, and all the variables

7x+40

Back to the equation:

-(7x+40)



We get rid of parentheses

-7x-40+180=0

We add all the numbers together, and all the variables

-7x+140=0

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

-7x=-140

x=-140/-7

x=+20

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