Odpowiedź:
2/3 * 0 = 0
2/3 + 0 = 2/3
2/3 * 1 = 2/3
2/3 + 1 = 1 i 2/3
2/3 - 0 = 2/3
0 : 2/3 = 0
A) 0
B) 2/3
C) 2/3
D) 1 i 2/3
E) 2/3
F) 0
