Evaluate the following arithmetic expressions:
`96-:6+7xx3-18`

Answer

To evaluate the arithmetic expression `96 ÷ 6 + 7 × 3 - 18`, we will follow the order of operations, often abbreviated as BODMAS/BIDMAS (Brackets, Orders, Division and Multiplication, Addition and Subtraction).

### Step-by-Step Solution:

1. **Identify the expression**:
\[ 96 ÷ 6 + 7 × 3 - 18 \]

2. **Perform Division**:
We start with the division part of the expression.
\[ 96 ÷ 6 = 16 \]
Now the expression becomes:
\[ 16 + 7 × 3 - 18 \]

3. **Perform Multiplication**:
Next, we perform the multiplication.
\[ 7 × 3 = 21 \]
Now the expression updates to:
\[ 16 + 21 - 18 \]

4. **Perform Addition**:
Now we add the results.
\[ 16 + 21 = 37 \]
The expression now is:
\[ 37 - 18 \]

5. **Perform Subtraction**:
Finally, we subtract.
\[ 37 - 18 = 19 \]

### Final Answer:
The final result of the expression `96 ÷ 6 + 7 × 3 - 18` is:
\[ \boxed{19} \]