山羊只数是绵羊的7分之2,山羊只数比绵羊少（1-2/7）/1=5/7=71.43%、
绵羊只数是山羊的1/（2/7）=7/2=3.5倍
山羊只数是绵羊的7分之2,山羊只数比绵羊少百分之多少?绵羊只数是山羊的几倍?
山羊只数是绵羊的7分之2,山羊只数比绵羊少百分之多少?绵羊只数是山羊的几倍?
数学人气：626 ℃时间：2020-01-28 14:20:19
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