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数学
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12.6*4分之5+3又5分之2除以5分之4+1.4*12.5
简算
*是乘号
人气:389 ℃ 时间:2020-03-25 10:41:34
解答
原式=12.6×5/4+3.4×5/4+14×5/4
=(12.6+3.4+14)×5/4
=30×5/4
=75/2
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