Simplify the following :
`15-6div2-5xx(-7)`

Answer

To simplify the expression `15 - 6 ÷ 2 - 5 × (-7)`, we will follow the order of operations, often remembered by the acronym BODMAS (Brackets, Orders, Division and Multiplication (from left to right), Addition and Subtraction (from left to right)).

### Step-by-Step Solution:

1. **Identify the operations**: The expression contains subtraction, division, and multiplication.
\[ 15 - 6 ÷ 2 - 5 × (-7) \]

2. **Perform the division**: According to BODMAS, we first handle the division.
\[ 6 ÷ 2 = 3 \]
Now, substitute this back into the expression:
\[ 15 - 3 - 5 × (-7) \]

3. **Perform the multiplication**: Next, we perform the multiplication.
\[ 5 × (-7) = -35 \]
Substitute this back into the expression:
\[ 15 - 3 - (-35) \]

4. **Handle the double negative**: Subtracting a negative is the same as adding a positive.
\[ - (-35) = +35 \]
Now the expression becomes:
\[ 15 - 3 + 35 \]

5. **Perform the addition and subtraction from left to right**:
- First, subtract:
\[ 15 - 3 = 12 \]
- Then, add:
\[ 12 + 35 = 47 \]

### Final Answer:
The simplified result of the expression `15 - 6 ÷ 2 - 5 × (-7)` is **47**.