To express \( \frac{18}{15} \) as a mixed number or fraction, we can simplify it:
First, divide the numerator by the denominator:
- \( 18 \div 15 = 1 \) with a remainder of \( 3 \).
So, we can express this as:
- Mixed Number: \( 1 \frac{3}{15} \).
- Simplified Fraction: \( \frac{6}{5} \) (by simplifying \( \frac{18}{15} \) to \( \frac{6}{5} \)).
Among the provided options, the correct answer is:
1 3/15.