15 3/8 - 11 1/5

4 13/40

To subtract 15 3/8 from 11 1/5, we can convert both mixed numbers to improper fractions and then subtract.

First, let's convert 15 3/8 to an improper fraction:
15 * 8 = 120
120 + 3 = 123
123/8

Next, let's convert 11 1/5 to an improper fraction:
11 * 5 = 55
55 + 1 = 56
56/5

Now, we can subtract the two fractions:
123/8 - 56/5

To subtract fractions, we need to have a common denominator. In this case, the common denominator will be 8 * 5 = 40.

So, let's rewrite the fractions with the common denominator:
(123/8) * (5/5) = 615/40
(56/5) * (8/8) = 448/40

Now, subtract the two fractions:
615/40 - 448/40 = (615 - 448) / 40 = 167/40

Finally, simplify the fraction, if possible:
167/40 is already in simplest form since there are no common factors between the numerator and the denominator.

Therefore, 15 3/8 - 11 1/5 is equal to 167/40 or 4 7/40.