Boolean Algebra

[Cujo]

Is the the correct simplification of Boolean algebra?

[tggzzz]

Your being in Australia makes it unnecessarily difficult for us to see your working. I suggest you turn the picture the right way up

[radiogeek381]

You ran into trouble on the second line.


AB +  A [NOT (B + C)]   +  B [NOT (B + C)]


Is that what you started with?

Then notice that things of the form


NOT(X + Y)


turn into (by DeMorgan's law)


(NOT X) AND (NOT Y)


and

X AND (NOT X) AND (anything at all)

disappears.

That will get you a fair way along.

[Cujo]

I stared with the first line at the top.

I thought the second line was right, I used DeMorgan's law: (The complement of sum = product of complements)

[coolyota]

Solved: