8-4,2:(2целых5/14 - 1целая4/21)

Question

8-4,2:(2целых5/14 - 1целая4/21)

Answer 1

8-4,2:(2целых5/14 - 1целая4/21)=7.9

1)2 5/14-1 4/21=33/14-25/21=7/6=1 1/6

2)4.2:7/6=0.1

3)8-0.1=7.9