Пошаговое объяснение:
1) 4/7 * (-35/6) =
2/1 * (-5/3) = -10/3 =
-3. 1/3
2) 5/62 * (-31/7) =
5/2 * (-1/7) = -5/14
3) -3. 1/3 - (-5/14) =
-3. 1/3 + 5/14 =
-3. 14/42 + 15/42 =
-2. 56/42 + 15/42 =
-2. 41/42
