Factors of 18 that add up to 17

We take "Factors of 18 that add up to 17" to mean "What combination(s) of two factors of 18 when added together will equal 17?"

We find the solution by first listing all the factors of 18 and then we find all the different combinations of two factors of 18 that when added together equal 17.

The factors of 18 are 1, 2, 3, 6, 9, and 18.

After trying all the different ways of adding the factors above together, we did not find any combinations of two factors of 18 that add up to 17.

However, one could argue that factors of 18 should include the negative counterparts to the positive factors above since minus times minus equals plus.

If we include the negative factors, we find the following combination(s) of two factors of 18 that add up to 17 to be as follows:

18 + (-1) = 17

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