Solve: Find the Missing Fraction in 2/12 + ? + 3/12 = 9/12

To solve this problem, follow these steps:

• Step 1: Add the known fractions: We first add the fractions given on the left-hand side. So, $\frac{2}{12} + \frac{3}{12} = \frac{5}{12}$.
• Step 2: Subtract this sum from the total: We know the sum of all the fractions is $\frac{9}{12}$. To find the missing fraction, we need to calculate $\frac{9}{12} - \frac{5}{12}$.
• Step 3: Perform the subtraction: Since the fractions have the same denominator, subtract numerators: $\frac{9 - 5}{12} = \frac{4}{12}$.
• Step 4: Verify your solution: Verify by adding all fractions including the missing one: $\frac{2}{12} + \frac{4}{12} + \frac{3}{12} = \frac{9}{12}$, which confirms our answer.

Therefore, the missing fraction is $\frac{4}{12}$.