Evaluate the following arithmetic expression:
`99-:9-10+7xx5`

Answer

To evaluate the arithmetic expression `99 ÷ 9 - 10 + 7 × 5`, we will follow the BODMAS rule, which stands for Brackets, Orders (i.e., powers and square roots, etc.), Division and Multiplication (from left to right), Addition and Subtraction (from left to right).

### Step-by-Step Solution:

1. **Identify the operations**: The expression consists of division, subtraction, addition, and multiplication.

Expression: `99 ÷ 9 - 10 + 7 × 5`

2. **Perform Division and Multiplication first**: According to BODMAS, we will first perform the division and multiplication from left to right.

- **Division**:
\[ 99 ÷ 9 = 11 \]
- **Multiplication**:
\[ 7 × 5 = 35 \]

Now, substitute these values back into the expression:
\[ 11 - 10 + 35 \]

3. **Perform Addition and Subtraction from left to right**:
- **Subtraction**:
\[ 11 - 10 = 1 \]
- **Addition**:
\[ 1 + 35 = 36 \]

4. **Final Result**: The value of the expression `99 ÷ 9 - 10 + 7 × 5` is:
\[ \text{Answer} = 36 \]