jq2=((numa + 30) / (7-numb)) * 3 怎么算也算不出21···············
numa=5 numb=2
jq2=((5+30)/(7-2))*3
jq2=((numa + 30) / (7-numb)) * 3
jq2=(35/5)*3
jq2=7*3
jq2=21
jq2=(35/5)*3=21