9 2/5 - ( 8 1/3 - 7 1/4 +5 1/6 )
9 2/5 - ( 8 1/3 - 7 1/4 +5 1/6 )==9 2/5 - ( 1 1/12 +5 1/6 )==9 2/5 - 6 1/4=3 3/20