Use De Morgan's laws to write the negation of the statement.
-$9 + 2 = 11$ and $7 - 4 \neq 3$
A) $9 + 2 \neq 11$ and $7 - 4 = 3$
B) $9 + 2 = 11$ or $7 - 4 \neq 3$
C) $9 + 2 \neq 11$ or $7 - 4 = 3$
D) $9 + 2 = 11$ and $7 - 4 = 3$

Question

Quizplus · Accepted Answer

De Morgan's laws state that the negation of a conjunction is the disjunction of the negations. Thus, the negation of $9 + 2 = 11$ and $7 - 4 \neq 3$ is $9 + 2 \neq 11$ or $7 - 4 = 3$.

Use De Morgan's Laws to Write the Negation of the Statement