33/40
Пошаговое объяснение:
1) -1/4 - 2/3 = -3/12 - 8/12 =
- 11/12
2) 4/5 - 2/15 = 12/15 - 2/15 = 10/15 = 2/3
3) -11/12 : 2/3 * (-3/5) =
-11/12 * 3/2 * (-3/5) =
-11/4 * 1/2 * (-3/5) =
-11/8 * (-3/5) = 33/40
33/40
Пошаговое объяснение:
1) -1/4 - 2/3 = -3/12 - 8/12 =
- 11/12
2) 4/5 - 2/15 = 12/15 - 2/15 = 10/15 = 2/3
3) -11/12 : 2/3 * (-3/5) =
-11/12 * 3/2 * (-3/5) =
-11/4 * 1/2 * (-3/5) =
-11/8 * (-3/5) = 33/40