Question

Решите плз пример: (-3,8 + 2 1/3)*(-1 7/8) + 4 1/6 : (-1 2/3)

Answer 1

По действиям:
1) -3,8 + 2 1/3 = -38/10 + 7/3 = -114/30 + 70/30 = -44/30= -1 14/30.
2) -1 14/30 * (-1 7/8) = 44/30*15/8 = 44*15/30*8 = 11/4
3) 4 1/6 : (-1 2/3) = 25/6 : (-5/3) = - 25*3/6*5=5/2
4) 11/4+5/2 = 21/4=5,25.
Ответ: 5,25