(180-x)-(x)=42

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Solution for (180-x)-(x)=42 equation: 



(180-x)-(x)=42

We move all terms to the left:

(180-x)-(x)-(42)=0

We add all the numbers together, and all the variables

(-1x+180)-x-42=0

We add all the numbers together, and all the variables

-1x+(-1x+180)-42=0

We get rid of parentheses

-1x-1x+180-42=0

We add all the numbers together, and all the variables

-2x+138=0

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

-2x=-138

x=-138/-2

x=+69

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