Solution
= Solution
Eliminating <logical implications> gives
$$
(A\to C)\to(B\to C)\equiv\neg(\neg A\lor C)\lor\neg B\lor C\equiv(A\land\neg C)\lor\neg B\lor C.
$$
An absorption step simplifies this to the <disjunctive normal form>
$$
\boxed{A\lor\neg B\lor C.}
$$
Each one-<literal> term is a permitted <logical conjunction> in a <disjunctive normal form>.