19. What fraction is missing from the following equation? (A) \( \frac{1}{3} \) (B) \( \frac{4}{9} \) (C) \( \frac{7}{12} \) (D) \( \frac{13}{12} \) 100 Topic 7 | Lesson \( 7-5 \)

To solve for the missing fraction in the equation, we can analyze the options given. Each fraction can be compared to the whole (100) based on how they contribute towards completing the equation. With \( \frac{1}{3} \) being the simplest and \( \frac{13}{12} \) indicating a fraction greater than 1, it's crucial to find a fraction that perfectly balances the equation's integrity while ensuring it remains under 100. A fun way to visualize this problem is to think of it like a pizza: if we have 100 slices of pizza and we want to share them equally among friends, which fraction would help us do that without any slices being left uneaten? If we calculate the options, \( \frac{4}{9} \) would likely have a satisfying share without exceeding that pizza limit!