1/3(32/15*25/4-16/3*9/8)+4 5/9=7
1)32/15*25/4=40/3
2)-16/3*9/8=-6
3)40/3-6=13 1/3-6=7 1/3
4)1/3*7 1/3=1/3*22/3=22/9
5)22/9+4 5/9=4 27/9=7
30 4/5-7/5(9/5*(12 7/12-9 19/36)-35/17*45/34)=
1)12 7/12-9 19/36=12 21/36-9 19/36=3 2/36=3 1/18
2)-35/17*45/34=-1575/578
3)3 1/18-2 419/578=860/2601
4)-7/5*860/2601=-1204/2601
5)30 4/5-1204/2601=30 4384/13005