[tex](4 - \frac{1}{4}) \times \frac{8}{15} = 2 \\ \\ 4 - \frac{1}{4} = \frac{4}{1} - \frac{1}{4} = \frac{4 \times 4}{1 \times 4} - \frac{1}{4} = \frac{16}{1} - \frac{1}{4} = \frac{16 - 1}{4} = \frac{15}{4} \\ \\ \frac{15}{4} \times \frac{8}{15} = \frac{15 \times 8}{4 \times 15} = \frac{120}{60} = 2 [/tex]