Odpowiedź:
a) 1 2/3 : 2 1/2 + 9 * 1 1/6 = 5/3 : 5/2 + 9 * 7/6 = 5/3 * 2/5 + 21/2 = 2/3 + 21/2 = 4/6 + 63/6 = 67/6 = 11 1/6
b) (1 1/2)^2 - 1 3/5 : 2 2/3 = 9/4 - 8/5 : 8/3 = 9/4 - 8/5 * 3/8 = 9/4 - 3/5 = 45/20 - 12/20 = 33/20 = 1 13/20
c) 3 1/4 : [(2 5/8 - 1 1/6) : 2 1/2] = 13/4 : [(21/8 - 7/6) : 5/2] = 13/4 : [(63/24 - 28/24) : 5/2] = 13/4 : (35/24 * 2/5) = 13/4 : 7/12 = 13/4 * 12/7 = 13 * 3/7 = 39/7 = 5 4/7
