6) 4 1/4 - 1/3 =

Convert mixed number to improper fraction: $$4 \frac{1}{4} = \frac{17}{4}$$. Find a common denominator for 4 and 3, which is 12. $$\frac{17}{4} = \frac{17 \times 3}{4 \times 3} = \frac{51}{12}$$. $$\frac{1}{3} = \frac{1 \times 4}{3 \times 4} = \frac{4}{12}$$. Subtract the fractions: $$\frac{51}{12} - \frac{4}{12} = \frac{47}{12}$$. Convert back to a mixed number: $$\frac{47}{12} = 3 \frac{11}{12}$$.