-0,3875
Пошаговое объяснение:
1) 11/15 - 1. 9/10 + 5/8 =
88/120 - 1. 108/120 + 75/120 =
-1. 20/120 + 75/120 =
-140/120 + 75/120 =
-65/120 = -13/24
2) -13/24 * 0,9 =
-13/24 * 9/10 = -13/8 * 3/10 = -39/80
3) -39/80 + 0,1 = -39/80 + 1/10 = -39/80 + 8/80 =
-31/80 = -0,3875
-0,3875
Пошаговое объяснение:
1) 11/15 - 1. 9/10 + 5/8 =
88/120 - 1. 108/120 + 75/120 =
-1. 20/120 + 75/120 =
-140/120 + 75/120 =
-65/120 = -13/24
2) -13/24 * 0,9 =
-13/24 * 9/10 = -13/8 * 3/10 = -39/80
3) -39/80 + 0,1 = -39/80 + 1/10 = -39/80 + 8/80 =
-31/80 = -0,3875