Operation Analogy — Multiply by 7, then add the first term: (2, 14, 16) → ____

Introduction / Context:
The pattern is: (a, a*7, a*7 + a). For (2, 14, 16): 2 → 2*7 = 14 → 14 + 2 = 16. Find the triple that follows the same rule.

Concept / Approach:
Test options: (3, 21, 24) fits because 3*7 = 21 and 21 + 3 = 24.

Why Other Options Are Wrong:
They fail either the multiplication-by-7 step or the final addition step.

Final Answer:
(3, 21, 24)