- $$9 \frac{2}{7} = \frac{9 \cdot 7 + 2}{7} = \frac{63 + 2}{7} = \frac{65}{7}$$
- $$4 \frac{5}{9} = \frac{4 \cdot 9 + 5}{9} = \frac{36 + 5}{9} = \frac{41}{9}$$
- $$2 \frac{5}{42} = \frac{2 \cdot 42 + 5}{42} = \frac{84 + 5}{42} = \frac{89}{42}$$
- $$2 \frac{1}{96} = \frac{2 \cdot 96 + 1}{96} = \frac{192 + 1}{96} = \frac{193}{96}$$
Ответ: 1) $$\frac{65}{7}$$, 2) $$\frac{41}{9}$$, 3) $$\frac{89}{42}$$, 4) $$\frac{193}{96}$$.