1:(a-1)x=b (a≠1); 2:(a-1)x=b; 3:ax-b=bx-a; 4:a分之x-1-b分之1-x=ab分之a+b(a+b≠0)

1:(a-1)x=b (a≠1); 2:(a-1)x=b; 3:ax-b=bx-a; 4:a分之x-1-b分之1-x=ab分之a+b(a+b≠0)
1:(a-1)x=b (a≠1); 2:(a-1)x=b; 3:ax-b=bx-a; 4:a分之x-1-b分之1-x=ab分之a+b(a+b≠0)

1:(a-1)x=b (a≠1); 2:(a-1)x=b; 3:ax-b=bx-a; 4:a分之x-1-b分之1-x=ab分之a+b(a+b≠0)
1:(a-1)x=b (a≠1)
x=b/(a-1)
2:(a-1)x=b;
a=1,b=0,x有无数解
a=1,b≠0,无解
a≠1,x=b/(a-1)
3:ax-b=bx-a;
ax-bx=b-a
(a-b)x=-(a-b)
a=b,有无数解
a≠b,x=-1
4:a分之x-1-b分之1-x=ab分之a+b(a+b≠0)
两边乘ab
bx-b-a+ax=a+b
(a+b)x=2(a+b)
x=2