-- A "mixed number" is (a whole number) plus (a fraction).
-- Two mixed numbers = (two whole numbers) and (two fractions).
-- The smallest whole number is ' 1', so when you add up all of that,
the smallest possible sum is (2) plus (two fractions).
-- So the sum must always be greater than 2 .
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THAT'S IF BOTH MIXED NUMBERS ARE POSITIVE .
If one of them is negative, then it's easy to do:
(3 and 1/2) + negative (1 and 1/2) = 2
(25 and 7/10) + negative (23 and 7/10) = 2
