Odpowiedź:
a) 4* 3 1/2 = 4* 7/2 = 28/2 = 14
b) 68/4 = 17
8. a)
2* 2 1/4 + 2 * 6 = 2 * 9/4 + 12 = 9/2 + 12 = 16 1/2
b) 2 * 13 + 2 * 8 = 26 + 16 = 42
