Answer
$\frac{11}{60}$
Work Step by Step
1. Find LCD of fractions:
The LCD of 15 and 12 is 60.
2. Write as equivalent fractions with denominator of 60.
$\frac{4*4}{15*4} - \frac{1*5}{12*5} = \frac{16}{60} - \frac{5}{60}$
3. Subtract numerators.
$\frac{16 - 5}{60} = \frac{11}{60}$