Odpowiedź:
7/9 * (-3 i 3/8) = 7/9 * (- 27/8) = -21/8 = - 16 i 5/8
3,6 : 1 i 1/5 = 3 i 6/10 : 1 i 1/5 = 36/10 : 6/5 = 36/10 * 5/6 = 6/2 = 3
2 i 4/9 : 4/27 = 22/9 * 27/4 = 33/2 = 16 i 1/2
