Сократите дроби : 20/118 ; 236/444; 66/102 ; 128/28 ;108/72 ; 36/243 ; 120/168 ; 720/640

1) 20/118 = (2 * 2 * 5)/(2 * 59) = 10/59;

2) 236/444 = (2 * 2 * 59)/(2 * 2 * 111) = 59/111;

3) 66/102 = (2 * 3 * 11)/(2 * 3 * 17) = 11/17;

4) 128/28 = (4 * 4 * 8)/(4 * 7) = 32/7;

5) 108/72 = (2 * 2 * 3 * 9)/(2 * 2 * 2 * 9) = 3/2;

6) 36/243 = (3 * 3 * 4)/(3 * 3 * 27) = 4/27;

7) 120/168 = (4 * 3 * 2 * 5)/(4 * 3 * 2 * 7) = 5/7;

8) 720/640 = (10 * 4 * 3 * 6)/(10 * 4 * 4 * 4) = (3 * 3)/(2 * 4) = 9/8.