x :10=4分之1:3分之1
0.4:X=1.2:2
12:2.4=3:x
人气:465 ℃ 时间:2020-03-28 09:53:19
解答
x :10=1/4:1/3x/3=5/2x=5/60.4:X=1.2:21.2x=0.4×21.2x=0.8x=2/312:2.4=3:x5:1=3:X5x=3x=3/5 x :10=1/4:1/3x/3=5/2x=5/60.4:X=1.2:21.2x=0.4×21.2x=0.8x=2/312:2.4=3:x5:1=3:X5x=3x=3/5
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