1:3/5-7/6*5/14=3/5-5/12=36/60-25/60=11/60
2:4又1/8+1.235=33/8+1.235=4.125+1.235=5.36
3:3又5/6-2.2=23/6+11/5=115/30+66/30=181/30
4:1.25/3/4=1.25*4/3=5/3
5:=1.2*4/15*3/8=1.6/5*3/8=0.6/5=0.12
6:=7/15*3/14/2/5=1/10*5/2=1/4
简便:
=15/4*1.6+5.5*5/22=6+1.25=7.25
=3/29*100/15*7.25=20/29*7.25=145/29=5
=0.4*5/2*9*15/3=1*45=45
=79/14*3/5+3/14=237/70+15/70=252/70=3.6
=4.5*(24/8)-2.5=13.5-2.5=11