若分式X-1分之3X+5无意义
则x=1
当3M-2X分之5 - 2M-X=0时
5/(3M-2)-2M-1=0
5-(2M+1)(3M-2)=0
6M^2-M-2-5=0
6M^2-M-7=0
(6M-7)(M+1)=0
M=7/6或-1