945-9-5:3

Решение:

1. $$5:3 = \frac{5}{3}$$
2. $$945 - 9 - \frac{5}{3} = 936 - \frac{5}{3} = \frac{936 \times 3 - 5}{3} = \frac{2808 - 5}{3} = \frac{2803}{3}$$
3. $$\frac{2803}{3} = 934 \frac{1}{3}$$

Ответ: $$934 \frac{1}{3}$$