6.47-(4/9+5.47)-5/9 简便方法计算

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6.47-(4/9+5.47)-5/9简便方法计算6.47-(4/9+5.47)-5/9简便方法计算6.47-(4/9+5.47)-5/9简便方法计算=6.47-4/9-5.47-5/9=(6.47-

6.47-(4/9+5.47)-5/9 简便方法计算
6.47-(4/9+5.47)-5/9 简便方法计算

6.47-(4/9+5.47)-5/9 简便方法计算
=6.47-4/9-5.47-5/9
=(6.47-5.47)-(4/9+5/9)
=1-1
=0