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which eqiuvalent fraction would you have to use in order to add 3/5 to 21/25?
人气:301 ℃ 时间:2020-05-18 09:37:48
解答
这个题的意思是:
用什么分数加上3/5结果是21/25
也就是用21/25-3/5
=(21-15)/25
=6/25
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