23x=14x+1423x-14x=149x=14x=14/9x=1又5/9
23x=14x+1423x-14x=149x=14x=14/9
23X=14X+149X=14X=14/9
23x-14x=149x=14x=14/9
23x=14x+149x=14x=14/9