-x=18+x

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Solution for -x=18+x equation:


-x=18+x

We simplify the equation to the form, which is simple to understand 
-x=18+x

We move all terms containing x to the left and all other terms to the right. 
-1x-1x=+18

We simplify left and right side of the equation. 
-2x=+18

We divide both sides of the equation by -2 to get x. 
x=-9

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