9/(9/8)/8/(8/7)/7/(7/6)/6/(6/5)/5/(5/4)/4/(4/3)用简便方法记算
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/09 00:31:44
x 1v
1hт xp}
a7גF*kx(0oo;{B-7:ӄDQ*yវ`GV%L, Ir)P3N2Vu(Wpp
9/(9/8)/8/(8/7)/7/(7/6)/6/(6/5)/5/(5/4)/4/(4/3)用简便方法记算
9/(9/8)/8/(8/7)/7/(7/6)/6/(6/5)/5/(5/4)/4/(4/3)用简便方法记算
9/(9/8)/8/(8/7)/7/(7/6)/6/(6/5)/5/(5/4)/4/(4/3)用简便方法记算
9/(9/8)/8/(8/7)/7/(7/6)/6/(6/5)/5/(5/4)/4/(4/3)
=9/9*8/8/8*7/7/7*6/6/6*5/5/5*4/4/4*3
=1*1/8*1/7*1/6*1/5*1/4*3
=3/(4*5*6*7*8)
=1/2240