1.5/12*4/3*3=5/3
2.9/10*5/2*3/8=27/32
3.3/5*2/3+6/7*14/3=2/5+4=22/5
4.2*4/3-3/5*5/9=8/3-1/3=7/3
5.3/4*2/5-3/4*1/3+7/8*2=3/10-1/4+7/4=9/5