What two numbers add to 1 and subtract to 20?

Here we will tell you what two numbers add to 1 and subtract to 20 and prove that our answer is correct.

The two numbers that add to 1 and subtract to 20 are:

10.5 and -9.5

And here is the math to prove that our answer to "What two numbers add to 1 and subtract to 20?" is correct:

Add:
10.5 + (-9.5) = 1

Subtract:
10.5 - (-9.5) = 20

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