Question: Compute the weakest precondition for: a:= 2 * b +1 b = a 3 { a < 0} A step by step solution with explanation

Compute the weakest precondition for:

a:= 2 * b +1

b = a 3

{ a < 0}

A step by step solution with explanation would be amazing.

I was thinking :

2 * b +1 < 0

2 * b < -1

b < -1/2 - Weakest Precondition

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