-x=200 so what is positive x

This was an end product of an equation I did for hw. Need help!
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1 Answer

x=-200. You can get this by adding x to each side: 0=200+x, now subtract 200 from each side: -200=x which is the same as x=-200.

Another way is to multiply each side by -1: -(-x)=-200 which is x=-200.
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