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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

(-1x+180)+(-1x+180)+40-180=0

We add all the numbers together, and all the variables

(-1x+180)+(-1x+180)-140=0

We get rid of parentheses

-1x-1x+180+180-140=0

We add all the numbers together, and all the variables

-2x+220=0

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

-2x=-220

x=-220/-2

x=+110

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