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(12分之5减4分之1)除以6分之5脱式计算要过程谢谢
人气:234 ℃ 时间:2019-12-09 06:19:04
解答
(12分之5减4分之1)除以6分之5
=(5/12-1/4)×6/5
=5/12×6/5-1/4×6/5
=1/2-3/10
=5/10-3/10
=2/10
=1/5
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