Ranked lp

Today I played two ranked games and in the first one I won and I got 10 lp. In the second one I won again and I got 9 lp. I don`t think that it is normal because I am silver 2 and my MMR is for gold 5. I just want to know why is it happening because until now I was always taking about 22 lp.
Report as:
Offensive Spam Harassment Incorrect Board