求x:y:z x:y=7/5:7/3,y:x=7:8
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求x:y:zx:y=7/5:7/3,y:x=7:8求x:y:zx:y=7/5:7/3,y:x=7:8求x:y:zx:y=7/5:7/3,y:x=7:8x:y=7/5:7/3=3:5=21:35y:x=
求x:y:z x:y=7/5:7/3,y:x=7:8
求x:y:z x:y=7/5:7/3,y:x=7:8
求x:y:z x:y=7/5:7/3,y:x=7:8
x:y=7/5:7/3=3:5=21:35
y:x=7:
y:z=7:8=35:40
x:y:z=21:35:40
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