What is 3 34 - 2 15?

To subtract the mixed numbers (3 \frac{3}{4}) and (2 \frac{1}{5}), first convert them to improper fractions. (3 \frac{3}{4} = \frac{15}{4}) and (2 \frac{1}{5} = \frac{11}{5}). Next, find a common denominator (which is 20), converting both fractions: (\frac{15}{4} = \frac{75}{20}) and (\frac{11}{5} = \frac{44}{20}). Now subtract: (\frac{75}{20} - \frac{44}{20} = \frac{31}{20}) or (1 \frac{11}{20}).