30 - 23,1:( 5 7/20 - 4 6/35)

Question

30 - 23,1:( 5 7/20 - 4 6/35)

Answer 1

1)57:20-46:35=1.54
2)30-23.1=6.9

Answer 2

3)57:20-46:35=1,54
2)30-23, 1=6,9
Вот и все.