(5/3 - 5/6) : 10/3 + 9/2 : 6=
(4/5 + 3/10 : 1/5) . 5/46 + 1=
( 1- 3/5 ) . 25/4 - 9/4 : 3=
6/5 - ( 1/4 + 7/8) . ( 1 - 1/3)=
14/3 ∶ 7+ 15/4 . 2/9 - 5/4 =
9/20
1
5/4
7/4
1/4
