Evaluate the following
`90-:3xx5`

Answer

To evaluate the expression `90 -: 3 x 5`, we need to follow the order of operations. The expression can be rewritten as `90 - (90 ÷ 3 × 5)`.

### Step-by-Step Solution:

1. **Rewrite the Expression:**
The expression can be interpreted as:
\[ 90 - (90 \div 3 \times 5) \]

2. **Perform the Division:**
First, we need to divide 90 by 3:
\[ 90 \div 3 = 30 \]

3. **Perform the Multiplication:**
Next, we multiply the result by 5:
\[ 30 \times 5 = 150 \]

4. **Subtract from 90:**
Now, we subtract the result from 90:
\[ 90 - 150 = -60 \]

5. **Final Answer:**
Therefore, the final answer is:
\[ -60 \]