What two numbers add up to 6999?

There are infinite combinations of two numbers that add up to 6999. Here are some examples using negative numbers:

-1 + 7000 = 6999
-2 + 7001 = 6999
-3 + 7002 = 6999
...

Here are some examples using two fractions that will add up to 6999:

6999/2 + 6999/2 = 6999
13998/3 + 6999/3 = 6999
20997/4 + 6999/4 = 6999
...

And here are some examples using two decimal numbers that will add up to 6999:

1.25 + 6997.75 = 6999
2.50 + 6996.5 = 6999
3.75 + 6995.25 = 6999
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 6999?", 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 6999. (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 6999?" has 3499 answers:

1 + 6998 = 6999
2 + 6997 = 6999
3 + 6996 = 6999
.
.
3497 + 3502 = 6999
3498 + 3501 = 6999
3499 + 3500 = 6999

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 6999 by 2 and then rounded down to the nearest whole number if necessary.

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