if you double a number and then add 8 you get half the original number what is the original number

If you double a number and then add 8, you get half of the original number. What's the original number
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1 Answer

2x+8=x/2 . . . 4x+16=x . . . 3x+16=0 . . . 3x=-16 . . . x=-16/3=-5.333333333333...
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