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3 can be expressed as a fraction, so it is a rational number.

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14y ago

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-3 can be written as the ratio of integers, like -3 to 1, or 21 to -7, or -792 to 264,

and since it can be written as the ratio of integers, it is a rational number, by definition.

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13y ago
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Q: Is -3 a rational number and why?
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