What two numbers add up to 198?

There are infinite combinations of two numbers that add up to 198. Here are some examples using negative numbers:

-1 + 199 = 198
-2 + 200 = 198
-3 + 201 = 198
...

Here are some examples using two fractions that will add up to 198:

198/2 + 198/2 = 198
396/3 + 198/3 = 198
594/4 + 198/4 = 198
...

And here are some examples using two decimal numbers that will add up to 198:

1.25 + 196.75 = 198
2.50 + 195.5 = 198
3.75 + 194.25 = 198
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 198?", 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 198. (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 198?" has 99 answers:

1 + 197 = 198
2 + 196 = 198
3 + 195 = 198
.
.
97 + 101 = 198
98 + 100 = 198
99 + 99 = 198

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

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What two numbers add up to 199?
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