Răspuns :
a) 2 si 1/3 * 9/28 = 7/3 * 9/28 = 3/4
b) 5 si 3/8 * 15/43 = 43/8 * 15/43 = 15/8
c) 14 * 1 si 3/6 * 13/27 * 1/26 * 10/15 * 2 si 4/7 = 14 * 1 si 1/2 * 13/27 *1/26 * 2/3 * 18/7 = 14 * 3/2 * 1/27 * 1/2 * 2/3 * 18/7 = 2/3
b) 5 si 3/8 * 15/43 = 43/8 * 15/43 = 15/8
c) 14 * 1 si 3/6 * 13/27 * 1/26 * 10/15 * 2 si 4/7 = 14 * 1 si 1/2 * 13/27 *1/26 * 2/3 * 18/7 = 14 * 3/2 * 1/27 * 1/2 * 2/3 * 18/7 = 2/3