1) 3/5*4/9+1(1/3)= 12/45+4/3(15)=12/45+60/45=72/45=8/5
2) 1(1/4)*2/5-1/3=5/4*2/5-1/3=10/25(3)-1/3(25)=30/75-25/75=5/75=1/15
3)3/8:1/2+3(1/4)=3/8*2/1+13/4=6/8+13/4=3/4+13/4=16/4=4
4)5/6:1/3+1(3/8)=5/6*3/1+11/8=15/6(4)+11/8(3)=60/24+33/24=93/24=31/8
5)1(2/5):5/7+3/8=7/5*7/5+3/8=49/25(8)+3/8(25)=392/200+75/200=467/200
6)2(1/3): 1(5/9)-5/6=7/3:14/9-5/6=7/3*9/14-5/6=3/2(3)-5/6=9/6-5/6=4/6=2/3