Question
The opposite number of 3 is______
- -3
- -4
- -5
- -6
Hint:
Two numbers are said to opposites of each other, if their sum add up to 0.
The correct answer is: -3
We are asked to find opposite of 3. Let that be x. Thus, we have 
. Solving the equation, we have:
Hence, the correct answer is option a.
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