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torx11
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Homework Statement
Simplify the following
xyz + x'(w+z') + yz(w+z')
Homework Equations
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.