Compute -7 minus 3 equals what?

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Multiple Choice

Compute -7 minus 3 equals what?

Explanation:
Subtracting a positive number from a negative number moves you further left on the number line. Start at -7 and subtract 3, which means go 3 steps to the left: -8, -9, -10. So -7 minus 3 equals -10. This is why -10 is the result. If you had added 3 instead of subtracting, you’d get -4. Subtracting different amounts would give -8 (subtracting 1) or -13 (subtracting 6), which are not what we did here.

Subtracting a positive number from a negative number moves you further left on the number line. Start at -7 and subtract 3, which means go 3 steps to the left: -8, -9, -10. So -7 minus 3 equals -10.

This is why -10 is the result. If you had added 3 instead of subtracting, you’d get -4. Subtracting different amounts would give -8 (subtracting 1) or -13 (subtracting 6), which are not what we did here.

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