Question

Помогите,решаем,но что- то не так: (8 - 4 13/20) - ( 6 - 3/20)=

Answer 1

1) 8 - 4.13/20=3.7/20
2) 6 - 3/20 = 5.17/20
3) 3.17/20 - 5.7/20 = -2.10/20 = -2.1/2

Answer 2

= ( 160/20 -93/20) - (120/20 -3/20) =

= ( 160 - 93 - 120 +3 )/20 = - 50/20 = - 2 10/20 = - 2 1/2