43 = =0,8 50 10 17 = 385 = 3,85 320 100 9 = 225 = 2,25 4 100

1. $$\frac{43}{50} = \frac{86}{100} = 0,86$$


2. $$3\frac{17}{20} = \frac{77}{20} = \frac{385}{100} = 3,85$$


3. $$\frac{9}{4} = \frac{225}{100} = 2,25$$

Ответ: смотри решение