35点.4-(6.5+3.5)=35.4-10=25.4
35.4-6.5-3.5=35.4-(6.5+3.5)=35.4-10=25.4望采纳 谢谢~
解:原式=35.4-(6.5+3.5)=35.4-10=25.4
35.4-6.5-3.5=35.4-(6.5+3.5)=35.4-10=25.4