let x = 2;;let x = 3in let y = x +1 in x + 1;;let x = 3 and y = x + 1 in x + y;;The results are ordered respectively to each expression:
val x : int = 2- : int = 7- : int = 6Can you help me understand why the last expression equals 6, it's hard for me to understand it.
I run this code in tryOCamlpro.