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		<id>https://tcs.nju.edu.cn/wiki/index.php?title=Opposite_number&amp;diff=7601</id>
		<title>Opposite number</title>
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		<updated>2016-02-19T05:36:21Z</updated>

		<summary type="html">&lt;p&gt;2607:FB90:2B96:2C41:78B8:6620:D16D:8012: &lt;/p&gt;
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&lt;div&gt;{{Unsourced|date=September 2015}}&lt;br /&gt;
&#039;&#039;&#039;Opposite number&#039;&#039;&#039; or &#039;&#039;&#039;additive inverse&#039;&#039;&#039; of any [[number]] (n) is a number which, if [[addition|added]] to &#039;&#039;n&#039;&#039;, results in 0, the [[identity element]] of addition. The opposite number for &#039;&#039;n&#039;&#039; is written as &#039;&#039;−n&#039;&#039;. For example, −7 is opposite to 7, because with &amp;lt;math&amp;gt;-\!7 + 7 = 0&amp;lt;/math&amp;gt;. You can say that the opposite number of a number, is the [[negative number|negative]] version of the [[positive]] number. This is what the opposite of 7 is or the opposite of -7.&lt;br /&gt;
{{math-stub}} &lt;br /&gt;
[[Category:Numbers]]&lt;/div&gt;</summary>
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