30.4 ×2 - 2.65
= 60.8 -2.65
= 58.15
甲数是30.4,比乙数多2.65,甲乙两数的和是多少
甲数是30.4,比乙数多2.65,甲乙两数的和是多少
数学人气：569 ℃时间：2019-11-09 02:32:24
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