(+ 1 2)
(display “Hello scheme!”)
; line comment
3
#| block
comment
on multiple
lines |#
(+ (* (+ 1 2)
(+ (* 2 4)
(+ 3 5)))
(+ (- 10 7) 6))
; 7-4*10+12
(+ (- 7 (* 4 10)) 12)
; 6/3+9*2-7+(3+4*2)
(+ (- (+ (/ 6 3) (* 9 2)) 7) (+ 3 (* 4 2)))
(+ (/ 6 3) (* 9 2) (- 7) (+ 3 (* 4 2)))
(* (+ 2 (* 4 6))(+ 3 5 7))
(+ 2 (* (- (+ 3 4)(+ 5 1))2))
(or (and (< 6 7) #t)(or (not #f)(= 7 3)))
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