Paco had 26 salty cookies and 17 sweet cookies. He ate 14 sweet cookies and 9 salty cookies. How many salty cookies did Paco have left?

Paco started with 10 cookies. 
He ate 4 cookies, so he has 6 cookies left. 
He gave 2 cookies away, so he has 4 cookies left. 
He ate 1 more cookie, so he has 3 cookies left. 

Paco has 3 salty cookies left.