Example: #6c, Section 1.1:

``Either the food is good and the service is excellent, or else the price is high.''

We might begin by assigning letters to the statements involved:

• A - the food is good
• B - the service is excellent
• C - the price is high

Then, assuming a non-exclusive or, we would translate our English sentence as

Negating

and using De Morgan, we obtain

Using De Morgan once again, we have

or

``The price is not high, and either the food is not good or the service is not excellent.''

We then might try to write this so that it sounds better (but at the risk of misrepresenting the facts!):

``The price is cheap, but either the food is no good or the service is poor.''