(1/3-2/1)/(1/4+1/3)*(-1/5-1/4)/(1/6+1/5)*91/7-1/6)/(-1/8+1/7)

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/23 18:15:08
(1/3-2/1)/(1/4+1/3)*(-1/5-1/4)/(1/6+1/5)*91/7-1/6)/(-1/8+1/7)(1/3-2/1)/(1/4+1/3)*(-1/5-1/4)/(1/6+1/5

(1/3-2/1)/(1/4+1/3)*(-1/5-1/4)/(1/6+1/5)*91/7-1/6)/(-1/8+1/7)
(1/3-2/1)/(1/4+1/3)*(-1/5-1/4)/(1/6+1/5)*91/7-1/6)/(-1/8+1/7)

(1/3-2/1)/(1/4+1/3)*(-1/5-1/4)/(1/6+1/5)*91/7-1/6)/(-1/8+1/7)
(1/3-2/1)/(1/4+1/3)*(-1/5-1/4)/(1/6+1/5)*(1/7-1/6)/(-1/8+1/7)
=-1/6/(5/12)*(-9/20)/(11/30)*(-1/42)/(1/56)
=-2/5*(-9/20)*30/11*(-1/42)*56
=9/50*30/11*(-8/7)
=9/55*(-8/7)
=-72/385