Evaulate:
`27-:(12-9)`

Answer

To solve the expression \( 27 \div (12 - 9) \), we will follow the order of operations, which states that we should solve expressions in brackets first before performing division.

### Step-by-Step Solution:

1. **Identify the expression**:
We have \( 27 \div (12 - 9) \).

2. **Solve the bracket**:
Calculate \( 12 - 9 \).
\[ 12 - 9 = 3 \]

3. **Rewrite the expression**:
Now substitute the result back into the expression:
\[ 27 \div 3 \]

4. **Perform the division**:
Now divide \( 27 \) by \( 3 \):
\[ 27 \div 3 = 9 \]

5. **Final answer**:
Therefore, the value of the expression \( 27 \div (12 - 9) \) is \( 9 \).