Well I have tried a few moves but don't get anywhere! The second number is the first by removing the bottom left stick. Also the fourth is the third by moving also the bottom left stick to the right. I don't know what to do next.
1 if you look at the pattern in which ones are removed and moved you will see that one is removed for 9. Then the opposite is removed for two. Next one is slid over to make three, then the bottom one is removed for seven. So according to the pattern, you would remove the top one to make one because it is the opposite of the bottom.