I think I am missing part of my notes, or at least I don't understand them:(adsbygoogle = window.adsbygoogle || []).push({});

if x+y = y+z and xy = xz, then x=z

x = (y+z)x Absorbtion (Don't really know where this is coming from)

x(y+z) Commutative

xy+xz Distributive

It stops here and starts again at:

yz+xz (I have no idea where this came from)

zy+zx Commutative

z(y+z) Distributive

(z+y)z Here is where it gets confusing. Where did the z+y come from?

z Proven previously

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# Boolean Algebra Proof

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