To determine which sign makes the statement true, we need to compare the two fractions: \( \frac{12}{15} \) and \( \frac{4}{5} \).
First, we can simplify \( \frac{12}{15} \):
- The greatest common divisor (GCD) of 12 and 15 is 3.
- Dividing both the numerator and the denominator by 3, we get: \[ \frac{12 \div 3}{15 \div 3} = \frac{4}{5} \]
Now we can compare \( \frac{12}{15} \) and \( \frac{4}{5} \): \[ \frac{12}{15} = \frac{4}{5} \]
Thus, the correct sign is \( = \).
So, the statement is: \[ \frac{12}{15} = \frac{4}{5} \]