What two numbers add up to 8989?

There are infinite combinations of two numbers that add up to 8989. Here are some examples using negative numbers:

-1 + 8990 = 8989
-2 + 8991 = 8989
-3 + 8992 = 8989
...

Here are some examples using two fractions that will add up to 8989:

8989/2 + 8989/2 = 8989
17978/3 + 8989/3 = 8989
26967/4 + 8989/4 = 8989
...

And here are some examples using two decimal numbers that will add up to 8989:

1.25 + 8987.75 = 8989
2.50 + 8986.5 = 8989
3.75 + 8985.25 = 8989
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 8989?", it may be more interesting to set some criteria to limit the result. We will set the follow criteria:

1) Only positive whole numbers can add up to 8989. (0 is not a positive or negative number and should not be included.)

2) Since a+b=29 is the same as b+a=29, we should only list it once.

Now, the answer to "What two numbers add up to 8989?" has 4494 answers:

1 + 8988 = 8989
2 + 8987 = 8989
3 + 8986 = 8989
.
.
4492 + 4497 = 8989
4493 + 4496 = 8989
4494 + 4495 = 8989

We have truncated the list above due to space, but you may be interested to know that we calculated the number of answers by dividing 8989 by 2 and then rounded down to the nearest whole number if necessary.

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