Question

7 3/8-2,35
5,7:6 1/3

Answer 1

7 3/8-2,35= 7 3/8- 2 35/100=
Сокращаем 35/100 на 5.
7 3/8- 2 7/20=
7 (3•5)/(8•5) - 2 (7•2)/(8•2)=
7 15/40- 2 14/40= 5 1/40

Или в десятичных
7 3/8- 2,35= 7 (3•125)/(8•125) -2,35=
7 375/1000 -2,35= 7,375- 2,35=
5,025


5,7:6 1/3 = 57/10 : (6•3+1)/3=
57/10: 19/3= 57/10• 3/19=
Сокращаем 57 и 19 на 19
3/10• 3/1= 9/10= 0,9