1)2, 2)3,07, 3)22/45, 4)-11/72
Пошаговое объяснение:
1) -12:6 = -2
2) -33,77:(-11) = 3,07
3) -32/75:(-48/55) = -32/75 * (-55/48) = -2/15 * (-11/3) = 22/45
4) -11/15 : 4 4/5 = -11/15 : 24/5 = -11/15 * 5/24 = -11/3 * 1/24 = -11/72
