Determine Whether the Following Symbolized Argument Is Valid or Invalid $\rarr$

Short Answer

Determine whether the following symbolized argument is valid or invalid.If invalid,provide a counterexample;if valid,construct a deduction.
P v (Q & K)
(P v Q) $\rarr$ [(L $\rarr$ ~X)& (~X $\rarr$ L)]
(L $\rarr$ ~X) $\rarr$ (X & ~Y)
(Y $\rarr$ Z)& (Z $\rarr$ M)
(Q $\rarr$ K) $\rarr$ Z/ $\therefore$ Z