Evaluate using BODMAS:
`21xx(3-1)-:3-:7`

Answer

To evaluate the expression `21 x (3 - 1) ÷ 3 ÷ 7` using the BODMAS rule, we will follow these steps:

### Step-by-Step Solution:

1. **Identify the expression**:
The expression we need to evaluate is `21 x (3 - 1) ÷ 3 ÷ 7`.

2. **Solve the brackets first**:
We have a bracket in the expression: `(3 - 1)`.
- Calculation:
\[ 3 - 1 = 2 \]
- Now, we can rewrite the expression:
\[ 21 x 2 ÷ 3 ÷ 7 \]

3. **Perform the multiplication**:
Next, we multiply `21` by `2`.
- Calculation:
\[ 21 x 2 = 42 \]
- Now, the expression becomes:
\[ 42 ÷ 3 ÷ 7 \]

4. **Perform the division from left to right**:
First, we divide `42` by `3`.
- Calculation:
\[ 42 ÷ 3 = 14 \]
- Now, the expression is:
\[ 14 ÷ 7 \]

5. **Complete the final division**:
Now, we divide `14` by `7`.
- Calculation:
\[ 14 ÷ 7 = 2 \]

6. **Final answer**:
The result of the expression `21 x (3 - 1) ÷ 3 ÷ 7` is:
\[ \text{Answer} = 2 \]