Запишите дроби 1/2 2/3 3/4 1/6 3/8 5/12 со знаменателем 24. Приведите дроби 1/3 2/5 2/9 4/15 к наименьшему общему делителю.

1) 1/2 = 1 * 12/2 * 12 = 12/24;

2/3 = 2 * 8/3 * 8 = 16/24;

3/4 = 3 * 6/4 * 6 = 18/24;

1/6 = 1 * 4/6 * 4 = 4/24;

3/8 = 3 * 3/8 * 3 = 9/24;

5/12 = 5 * 2/12 * 2 = 10/24.

2) 9 = 3 * 3; 15 = 5 * 3.

1/3 = 1 * 15/3 * 15 = 15/45;

2/5 = 2 * 9/5 * 9 = 18/45;

2/9 = 2 * 5/ 9 * 5 = 10/45;

4/15 = 4 * 3/15 * 3 = 12/45.