用简便方法计算(6+9+27+54+99)/3
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用简便方法计算(6+9+27+54+99)/3
用简便方法计算(6+9+27+54+99)/3
用简便方法计算(6+9+27+54+99)/3
(6+9+27+54+99)/3
=6/3+9/3+27/3+54/3+99/3
=2+3+9+18+33
=2+18+3+9+33
=20+12+33
=65