Выполните деление 1:1/7 5:5/8 4:8/9 120:1/20 3/7:9/14 3/10:8/14 7/12:5/6 7/8:3/4 12:5/8 1/3:3 5/7:10 10/11:5 1/200:200 9/16 : 6 84/121:63/110

Чтобы разделить число на дробь, нужно число умножить на обратную дробь.

1 : 1/7 = 1 * 7/1 = 7;

5 : 5/8 = 5 * 8/5 = 8;

4 : 8/9 = 4 * 9/8 = 36/8 = 9/2 = 4 1/2;

120 : 1/20 = 120 * 20/1 = 2400;

3/7 : 9/14 = 3/7 * 14/9 = 1/1 * 2/3 = 2/3;

3/10 : 8/14 = 3/10 * 14/8 = 3/5 * 7/8 = 21/40;

7/12 : 5/6 = 7/12 * 6/5 = 7/2 * 1/5 = 7/10;

7/8 : 3/4 = 7/8 * 4/3 = 7/2 * 1/3 = 7/6 = 1 1/6;

12 : 5/8 = 12 * 8/5 = 96/5 = 19 1/5;

1/3 : 3 5/7 : 10 = 1/3 : 26/7 : 10 = 1/3 * 7/26 : 10 = 7/78 * 1/10 = 7/780;

10/11 : 5 1/200 : 200 = 10/11 : 1001/200 * 1/200 = 1/1 * 91/20 * 1/200 = 91/4000;

9/16 : 6 84/121 : 63/110 = 9/16 : 810/121 * 110/63 = 9/8 * 405/121 * 110/63 = 3645/968 *

* 110/63 = 405/349 * 5/7 = 2025/2443.