What two numbers add to 9 and subtract to 31?

Here we will tell you what two numbers add to 9 and subtract to 31 and prove that our answer is correct.

The two numbers that add to 9 and subtract to 31 are:

20 and -11

And here is the math to prove that our answer to "What two numbers add to 9 and subtract to 31?" is correct:

Add:
20 + (-11) = 9

Subtract:
20 - (-11) = 31

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