Answer:
Explanation:
To add these mixed numbers, we first need to convert them to improper fractions:
-3 1/4 = -13/4
4 2/5 = 22/5
Now we can add the fractions by finding a common denominator, which is 20:
-13/4 + 22/5 = (-65/20) + (88/20) = 23/20
To express the answer as a mixed number, we divide the numerator by the denominator:
23 ÷ 20 = 1 remainder 3
So the sum of -3 1/4 and 4 2/5 is 1 3/20.