15/(4-1)=15/3=5
5X4=20
小明和小花作数学题,小明比小花多做15道题,小明做的题是小花做的4倍,问小明做了寄到题?要没有X的解答
小明和小花作数学题,小明比小花多做15道题,小明做的题是小花做的4倍,问小明做了寄到题?要没有X的解答
数学人气:559 ℃时间:2019-11-04 08:50:51
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