(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

For real numbers x and y prove the following:

llxl - lyll < (or equal to) lx - yl

2. Relevant equations

3. The attempt at a solution

Im not really sure where to start, i was considering cases where x < 0 and say y< 0 and what that would imply say x-y would be. But im not sure how to continue.

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# Homework Help: Proving inequalities

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