SOLUTIONS TO FRAME 74 (Continued)
b.
D + E + F + D(EF + EF) + DEF + +E (DF + DF)
De Morgan's
Distributive
Distributive
theorem
DEF + DEF + DEF + DEF+ EDF + EDF
Double
Commutative
negative
DEF + DEF + DEF + DEF + DEF + DEF
Three groups of two
squares
DE + EF + DF
or
Three groups of two
squares
EF+ DF + DE
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