Уменьшить дробь 2/4, 3/9, 4/16, 11/66, 5/35, 18/20,5/10,16/12, 30/20, 12/9, 2/6,

Чтоб уменьшить дробь найдем общий множитель в числителе и знаменателе и сократим дробь на него:

1) 2/4 = 2/(2 * 2) = 1/2;

2) 3/9 = 3/(3 * 3) = 1/3;

3) 4/16 = 4/(4 * 4) = 1/4;

4) 11/66 = 11/(6 * 11) = 1/6;

5) 5/35 = 5/(7 * 5) = 1/7;

6) 18/20 = (9 * 2)/(10 * 2) = 9/10;

7) 5/10 = 5/(5 * 2) = 1/2;

8) 16/12 = (4 * 4)/(4 * 3) = 4/3 = 1 1/3;

9) 30/20 = (3 * 10)/(2 * 10) = 3/2 = 1 1/2;

10) 12/9 = (4 * 3)/(3 * 3) = 4/3 = 1 1/3;

11) 2/6 = 2/(2 * 3) = 1/3;

12) 55/22 = (5 * 11)/(2 * 11) = 5/2 = 2 1/2;

13) 17/51 = 17/(3 * 17) = 1/3;

14) 12/8 = (3 * 4)/(4 * 2) = 3/2 = 1 1/2;

15) 24/40 = (3 * 8)/(8 * 5) = 3/5;

16) 15/6 = (3 * 5)/(3 * 2) = 5/2 = 2 1/2;

17) 10/100 = 10/(10 * 10) = 1/10.