Solution
= Solution
\b[False.] With the <sets> $A=\{1\}$, $B=\varnothing$ and $C=\{1\}$, both <set differences> are empty but $A\ne B$. Removing $C$ loses the distinction between their memberships inside $C$.
= Solution
\b[False.] With the <sets> $A=\{1\}$, $B=\varnothing$ and $C=\{1\}$, both <set differences> are empty but $A\ne B$. Removing $C$ loses the distinction between their memberships inside $C$.