б) $$2\frac{4}{9} \times 18 = (2 + \frac{4}{9}) \times 18 = 2 \times 18 + \frac{4}{9} \times 18 = 36 + \frac{4 \times 18}{9} = 36 + \frac{4 \times 2}{1} = 36 + 8 = 44$$
Ответ: 44