Question

Вычислите:
а)457×4 1/7-2,57×4 1/7
б)-4,5+(-5,6+4,5)
Помогите пжлст

Answer 1

б) 1. -5.6+4.5= -1.1
2. -4.5+(-1.1)= -5.6

а) 4.57×4 1/7-2.57×4 1/7= 8.28

1)4 1/7=4.14
2) 4.57×4.14=18.92
3) -2.57×4.14=-10.64
4) 18.92-10.64=8.28