1/(2/3)/(3/4)/(4/5)/(5/6)/(6/7)/(7/8)
=1x3/2x4/3x5/4x6/5x7/6x8/7
=8/2
=4
如果本题有什么不明白可以追问,1*3/2*4/3*5/4*6/5*7/6*8/7��ô���8/2�ģ�����3 4 5 6 7 都消去了