74又1/72乘72/73= 简便计算,急,

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74又1/72乘72/73=简便计算,急,74又1/72乘72/73=简便计算,急,74又1/72乘72/73=简便计算,急,74又1/72乘72/73=(73+73/72)×72/73=73×72/

74又1/72乘72/73= 简便计算,急,
74又1/72乘72/73= 简便计算,急,

74又1/72乘72/73= 简便计算,急,
74又1/72乘72/73
=(73+73/72)×72/73
=73×72/73+73/72×72/73
=72+1
=73

要咋个计算简便呢 直接把分子分母约分 不久出答案了 =74*73*72

(73+73|72)x72|73

74又1/72乘72/73=74x72+1)/73=[(73+1)(73-1)+1]/73=73