如图,cb=1/3ab,ac=3/1ad,ab=3/1ae,若ce=4cm,求de的长?快一点啊,我很急的!
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![如图,cb=1/3ab,ac=3/1ad,ab=3/1ae,若ce=4cm,求de的长?快一点啊,我很急的!](/uploads/image/z/9957343-31-3.jpg?t=%E5%A6%82%E5%9B%BE%2Ccb%3D1%2F3ab%2Cac%3D3%2F1ad%2Cab%3D3%2F1ae%2C%E8%8B%A5ce%3D4cm%2C%E6%B1%82de%E7%9A%84%E9%95%BF%3F%E5%BF%AB%E4%B8%80%E7%82%B9%E5%95%8A%2C%E6%88%91%E5%BE%88%E6%80%A5%E7%9A%84%21)
如图,cb=1/3ab,ac=3/1ad,ab=3/1ae,若ce=4cm,求de的长?快一点啊,我很急的!
如图,cb=1/3ab,ac=3/1ad,ab=3/1ae,若ce=4cm,求de的长?
快一点啊,我很急的!
如图,cb=1/3ab,ac=3/1ad,ab=3/1ae,若ce=4cm,求de的长?快一点啊,我很急的!
设CB=x,则AB=3x,AC=2x,AD=6x,AE=9x,所以CE=AE-AC=9x-2x=7x,所以x=4/7cm,DE=AE-AD=9x-6x=3x=12/7cm