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8 July, 23:07
What's the opposite of - 21? : D
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Paris Garcia
9 July, 00:56
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21
Step-by-step explanation:
Opposite number or additive inverse of any number (n) is a number which, if added to n, results in 0, the identity element of addition. The opposite number for n is written as - n.
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Rylee Dickson
9 July, 01:00
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The answer is:21
Mathematical key for opposite numbers:
The opposite of a negative number is its positive number.
The opposite of a positive number is its negative number.
Therefore, the opposite of - 21 is 21.
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