Answer :
(s equals he final number of stickers)
There are two different expressions that can relay to this problem. (15-3)+4=s, or you can just write it explicitly: (15-3)+4= 16 stickers.
There are two different expressions that can relay to this problem. (15-3)+4=s, or you can just write it explicitly: (15-3)+4= 16 stickers.