What two numbers add up to 699?

There are infinite combinations of two numbers that add up to 699. Here are some examples using negative numbers:

-1 + 700 = 699
-2 + 701 = 699
-3 + 702 = 699
...

Here are some examples using two fractions that will add up to 699:

699/2 + 699/2 = 699
1398/3 + 699/3 = 699
2097/4 + 699/4 = 699
...

And here are some examples using two decimal numbers that will add up to 699:

1.25 + 697.75 = 699
2.50 + 696.5 = 699
3.75 + 695.25 = 699
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 699?", 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 699. (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 699?" has 349 answers:

1 + 698 = 699
2 + 697 = 699
3 + 696 = 699
.
.
347 + 352 = 699
348 + 351 = 699
349 + 350 = 699

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

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