=(10+0.4)-(10-0.4)*0.35=10+0.4-10*0.35+0.4*0.35=10*(1-0.35)+0.4*(1+0.35)=6.5+0.14=6.64
(10+.4)-(10-.4)*.35=10.4-35+.35*4剩下你就自己算吧
10.4*9.6-10.4*0.35=99.84-3.64=96.2
用计算器啊