7.24*3/5+0.6*2.41-0.65*60%=7.24*0.6+2.41*0.6-0.65*0.6=(7.24+2.41-0.65)*0.6=9*0.6=5.4
﹙7.24＋2.41－0.65﹚×0.6＝5.4
答案是5.4
5.4
