So, I have this boolean expression and I have to simplify it, here is what I am doing:
$(b + d) * (a' + b' + c)$
*Opening the expression by multiplication
$= a'b + bb' + bc + a'd + b'd + cd$
$= a'b + bc + a'd + b'd + cd$
But when I go and check the answer using an online simplifier, the answer is:
ANS = $a'b + bc + b'd$
But I can't think of any steps to reduce my equation to the required answer.
Any help would be appreciated.