(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Simplify the following

xyz + x'(w+z') + yz(w+z')

2. Relevant equations

3. The attempt at a solution

xyz + x'(w + z') + yz(w + z')

xyz + x'w + x'z' + yz(w + z')

xyz + x'w + x'z' + yzw + yzz'

xyz + x'w + x'z' + yzw + 0

I got the answer xyz + x'w + x'z' + yzw

However in the book it says the answer is xyz + x'w + x'z'. How could that be? I don't see any way of getting rid of yzw. Please tell me if this is correct or I need to fix something. Thank you.

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# Please help me with simplifying a boolean equation

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