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Step * 1 1 of Lemma rational-approx-property2

.....assertion..... 
1. x : ℝ
2. n : ℕ+
3. |x - (x within 1/n)| ≤ (r1/r(n))
⊢ -(x - (x within 1/n)) ≤ |x - (x within 1/n)|
BY
{ Auto }

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Latex:

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Latex:
.....assertion..... 
1.  x  :  \mBbbR{}
2.  n  :  \mBbbN{}\msupplus{}
3.  |x  -  (x  within  1/n)|  \mleq{}  (r1/r(n))
\mvdash{}  -(x  -  (x  within  1/n))  \mleq{}  |x  -  (x  within  1/n)|


By

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Latex:
Auto

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