2.05减0.81除2.7乘4.5用简便算法怎么算

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2.05减0.81除2.7乘4.5用简便算法怎么算

2.05减0.81除2.7乘4.5用简便算法怎么算
2.05减0.81除2.7乘4.5用简便算法怎么算

2.05减0.81除2.7乘4.5用简便算法怎么算
2.05-0.81/2.7*4.5 =2.05-0.3*4.5
=2.05-1.35
=0.7

5-(2.7/0.81)*4.5 = -10

5-(2.7/0.81)*4.5 = -10