assignment 4
[exp [exp [exp [number]]][op [+]][exp [(][exp [exp [number]][op [-]][exp [exp [number]][op [*]][exp [number]]]][)]]]
["+" ["3"][(] [-["9"][* ["2"]["4"]]] [)]]
Seonglae Cho
Seonglae Cho[exp [exp [exp [number]]][op [+]][exp [(][exp [exp [number]][op [-]][exp [exp [number]][op [*]][exp [number]]]][)]]]["+" ["3"][(] [-["9"][* ["2"]["4"]]] [)]]