Question

simplify 39_(23_(29_(17_9_3)))

Answer 1

39_(23_(29_(17_9_3)))
39_(23_(29_(17_12)))
39_(23_(29_(5)))
39_(23_(29_5))
39_(23_24)
39_(_1)
39+1
40

Answer 2

Hope this will help
39-(23-(29-(17-9-3)))
39-(23-(29-(17-12)))
39-(23-(29-(5)))
39-(23-(29-5))
39-(23-(24))
39-(23-24)
39-(-1)
39+1
40