Question

simplify ratios
1. 15:18
2. 9:18

Answer 1

To simplify the ratios, we divide both parts of the ratio by their greatest common divisor (GCD).

1. For the ratio **15:18**:
- The GCD of 15 and 18 is 3.
- Divide both parts by 3:
\( \frac{15}{3} : \frac{18}{3} = 5:6 \)

So, **15:18 simplifies to 5:6**.

2. For the ratio **9:18**:
- The GCD of 9 and 18 is 9.
- Divide both parts by 9:
\( \frac{9}{9} : \frac{18}{9} = 1:2 \)

So, **9:18 simplifies to 1:2**.

In summary:
- **15:18 simplifies to 5:6**
- **9:18 simplifies to 1:2**