Answers

2015-06-28T20:25:49+08:00
5k-3
5k=3
k=3-5
k=-2

k+2
k=-2

3k-11
3k=11
k=11-3
k=8
0
2015-06-29T06:30:46+08:00
5k-3=0
k=5/3

k=-2

3k-11=0
k=11/3

that's the answer..
0