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3:7分之6 =18:7 0.78:20分之13 =0.78:0.65=6:5 9.5公頃:5700平方米=90000:5700=300:19 x分之0.01=2分之1=3分之1 抄錯了吧 如果本題有什麼不明白可以追問,如果滿意請點擊“選為滿意答案”
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