Mathematics Handbook/Addition (short): Difference between revisions
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# a + (a) = 2a → Any number added to itself gives double the number | # a + (a) = 2a → Any number added to itself gives double the number | ||
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Revision as of 23:58, 30 July 2011
- a + 0 = a → Any number added to zero gives the number itself.
- a + (-a) = 0 → Any number added to its opposite (additive inverse) gives zero
- a + (a) = 2a → Any number added to itself gives double the number