What is the product of -3 and 7?

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Multiple Choice

What is the product of -3 and 7?

Explanation:
When you multiply a negative number by a positive number, the product is negative. Take the absolute values: 3 × 7 = 21. Since one factor is negative, put the negative sign in front: -21. So the product is -21. The other possibilities don’t match both the sign and the size; the magnitude should be 21, and the sign should be negative because of the negative factor.

When you multiply a negative number by a positive number, the product is negative. Take the absolute values: 3 × 7 = 21. Since one factor is negative, put the negative sign in front: -21. So the product is -21. The other possibilities don’t match both the sign and the size; the magnitude should be 21, and the sign should be negative because of the negative factor.

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