Evaluate or simplify the following expression .
`5 xx 2- [3 - (5 - 7 + 2 " of " 4 - 19)]`

Answer

To evaluate or simplify the expression \( 5 \times 2 - [3 - (5 - 7 + 2 \times 4 - 19)] \), we will follow the order of operations, often remembered by the acronym BODMAS/BIDMAS (Brackets, Orders (i.e., powers and roots, etc.), Division and Multiplication, Addition and Subtraction).

### Step-by-Step Solution:

1. **Evaluate the innermost bracket**:
\[ 5 - 7 + 2 \times 4 - 19 \]
First, calculate \( 2 \times 4 \):
\[ 2 \times 4 = 8 \]
Now substitute back into the expression:
\[ 5 - 7 + 8 - 19 \]

2. **Perform the operations from left to right**:
- Calculate \( 5 - 7 \):
\[ 5 - 7 = -2 \]
- Now substitute:
\[ -2 + 8 - 19 \]
- Calculate \( -2 + 8 \):
\[ -2 + 8 = 6 \]
- Now substitute:
\[ 6 - 19 \]
- Finally, calculate \( 6 - 19 \):
\[ 6 - 19 = -13 \]

3. **Substitute back into the original expression**:
Now we have:
\[ 5 \times 2 - [-13] \]
Which simplifies to:
\[ 5 \times 2 + 13 \]

4. **Calculate \( 5 \times 2 \)**:
\[ 5 \times 2 = 10 \]

5. **Add the results**:
\[ 10 + 13 = 23 \]

### Final Answer:
The value of the expression \( 5 \times 2 - [3 - (5 - 7 + 2 \times 4 - 19)] \) is \( 23 \).