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 Real numbers: algebra essentials

Card 23 / 35:
identity property of addition
there is a unique number, called the additive identity, 0, which, when added to a number, results in the original number; in symbols, a + 0 = a

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Questions & Answers
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Source:
OpenStax, Algebra and trigonometry. OpenStax CNX. Nov 14, 2016 Download for free at https://legacy.cnx.org/content/col11758/1.6
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