简便方法33.3/(5.85/0.65)—0.7=?

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简便方法33.3/(5.85/0.65)—0.7=?简便方法33.3/(5.85/0.65)—0.7=?简便方法33.3/(5.85/0.65)—0.7=?(5.85/0.65)=933.3/9-0.

简便方法33.3/(5.85/0.65)—0.7=?
简便方法33.3/(5.85/0.65)—0.7=?

简便方法33.3/(5.85/0.65)—0.7=?
(5.85/0.65)=9
33.3/9-0.7=111/30-21/30=90/30=3
怎么简便算啊,只能这样啊