Question

Вычислить 7 18/25 - 7 8/25 5/9 : 3 1/3. 5/6 : 3 1/3 4 2/3 * 7 1/12

Answer 1

7 18/25 - 7 8/25 = 10/25 = 2/5;

5/9 : 3 1/3 = 5/9 : 10/3 = 5/9 · 3/10 = (1·1)/(3·2) = 1/6;

5/6 : 3 1/4 = 5/6 : 10/3 = 5/6 · 3/10 = (1·1)/(2·2) = 1/4;

4 2/3 · 7 1/12 = 14/3 · 85/12 = (7·85)/(3·6) = 595/18 = 33 целых 1/18.