化简比: 1.七分之三乘42:六分之五乘42=18:35 2.32乘9:九分之八乘9= 288:8=288除以8:8除以8=36:1求比值: 1. 0.75:2=0.75除以2=0.375 2.10:0.02=10除以0.02=500
3/7:5/6=3*6/5*7=18:3532:8/9=32*9/8=36:10.75:2=3/4:2=3/(4*2)=3:810:0.02=10/0.02=500=500:1