4x+3y=5
kx-(k-1)y=8
x=-y+1
代入4x+3y=5
-4y+4+3y=5
y=-1
x=1+1=2
代入kx-(k-1)y=8
2k-k+1=8
k=7如果是kx+(k-1)y=8呢哦，对不起，我前面写错了是kx-(k-1)y=8则2x+k-1=8k=3若是kx+(k-1)y=8则2k-k+1=8k=7