Question

如果x=-2是方程kx+k-1=0的解，则k=____

Answer 1

k=-1

Answer 2

解：把x=-2代入方程，得：-2k+k-1=0，
解得：k=-1．
故填-1．

Answer 3

-1

Answer 4

-1

Answer 5

解：把x=-2代入方程kx+k-1=0,
则-2k+k-1=0,
-k-1＝0.
K=-1

Answer 6

2.1,15
3.5
4.75/32(估计本意是1.5)
5.-1
6.2