$((p\wedge q) \vee (\neg p \wedge r) \vee (q \wedge r))$
$\iff$ $(p\wedge q) \vee r\wedge(\neg p\vee q)$ (Distributive Law)
Not really sure where to go from here, need some hints please.
$((p\wedge q) \vee (\neg p \wedge r) \vee (q \wedge r))$
$\iff$ $(p\wedge q) \vee r\wedge(\neg p\vee q)$ (Distributive Law)
Not really sure where to go from here, need some hints please.
On
Hint:
$$[(p \wedge q) \vee (\neg p \wedge r) \vee (q \wedge r)]$$
$$\equiv [(p \wedge q) \vee (q \wedge r) \vee (\neg p \wedge r)] $$ its happens because of the commutativity of $\vee$
Then apply the Distributive Law
$$\equiv [q \wedge(p \vee r) \vee (\neg p \wedge r) ]$$
and from here should be easy to simplify it.
It helps that $(q \wedge r) \implies ((p\wedge q) \vee (\neg p \wedge r)).$