14分之5×11分之9+14分之13×11分之5
=14分之5×11分之9+14分之5×11分之13
=5/14×(9/11+13/11)
=5/14×2
=5/7
14分之5×11分之9+14分之13×11分之5等于多少?
14分之5×11分之9+14分之13×11分之5等于多少?
数学人气:671 ℃时间:2019-10-17 00:37:55
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