Step 1 :Let $p$ and $q$ represent the following statements: $p: 5+10=14$ and $q: 7 \times 3=42$.
Step 2 :Determine the truth value for the statement $\sim p \vee \sim q$.
Step 3 :The statement $p$ is false because $5 + 10$ does not equal $14$.
Step 4 :The statement $q$ is also false because $7 \times 3$ does not equal $42$.
Step 5 :Apply the NOT operation to each of these truth values. NOT false is true.
Step 6 :Finally, apply the OR operation to these two truth values. The OR operation is true if either or both of its operands are true.
Step 7 :So, the truth value of $\sim p \vee \sim q$ is true.
Step 8 :Final Answer: $\sim p \vee \sim q$ is \(\boxed{true}\).