Сократите дроби: 10·11·9/12·10·11, 6*12/20*9, 3*4*25/24*14

а) 10 * 11 * 9/12 * 10 * 11 = 9075.

10 * 11 = 110.

110 * 9/12 = (110 * 9) / 12 = 990/12 на 6 = 165/2.

165/2 * 110 = (165 * 110) / 2 = 18150/2 = 9075.

б) 6 * 12/20 * 9 = 32 2/5.

6 * 12/20 = (6 * 12) / 20 = 72/20 на 4 = 18/5.

18/5 * 9 = (18 * 9) / 5 = 162/5 = 32 2/5.

в) 3 * 4 * 25/24 * 14 = 175.

3 * 4 = 12.

12 * 25/24 = (12 * 25) / 24 = 300/24 на 12 = 25/2.

25/2 * 14 = (25 * 14) / 2 = 350/2 = 175.