I am new to Lisp and i am self studying, recently i was doing an exercise and i just couldn't get the answer and i looked for the answer and it was 16 i didn't understand how it came to 16.Thank you for anyone for helping me.

10

(+ 5 3 4)

(- 9 1)

(/ 6 2)

(+ (* 2 4) (- 4 6))

(define a 3)

(define b (+ a 1))

(+ a b (* a b))

(= a b)

(if (and (> b a) (< b (* a b)))

b

a)

(cond ((= a 4) 6)

((= b 4) (+ 6 7 a))

(else 25))

(+ 2 (if (> b a) b a))

(* (cond ((> a b) a)

((< a b) b)

(else -1))

(+ a 1))

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