If x and y are positive integers, is x - y always positive? Explain.

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asked Oct 10, 2015 69.6k views

2 Answers

Serdar Polat · Answer 1 · 2015-10-15T21:58:42+0000

No, if y happens to be a larger integer than x, then the result will be negative.
For example, lets say that x=4 and y=9, so x-y = 4-9 = -5.
But if we were to reverse it and make x=9 and y=4, then x-y = 9-4 = 5.

If x and y are positive integers, is x - y always positive? Explain.

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