What two numbers add up to 7687?

There are infinite combinations of two numbers that add up to 7687. Here are some examples using negative numbers:

-1 + 7688 = 7687
-2 + 7689 = 7687
-3 + 7690 = 7687
...

Here are some examples using two fractions that will add up to 7687:

7687/2 + 7687/2 = 7687
15374/3 + 7687/3 = 7687
23061/4 + 7687/4 = 7687
...

And here are some examples using two decimal numbers that will add up to 7687:

1.25 + 7685.75 = 7687
2.50 + 7684.5 = 7687
3.75 + 7683.25 = 7687
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 7687?", 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 7687. (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 7687?" has 3843 answers:

1 + 7686 = 7687
2 + 7685 = 7687
3 + 7684 = 7687
.
.
3841 + 3846 = 7687
3842 + 3845 = 7687
3843 + 3844 = 7687

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 7687 by 2 and then rounded down to the nearest whole number if necessary.

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What two numbers add up to 7688?
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