Write the following statements in mathematical form using signs and symbols :
The excess of 15 over x is 10.

Answer

To convert the statement "The excess of 15 over x is 10" into a mathematical form, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Phrase "Excess of 15 over x":**
- The phrase "excess of 15 over x" means how much more 15 is than x. This can be expressed as \(15 - x\).

2. **Set Up the Equation:**
- According to the statement, this excess is equal to 10. So we can write the equation as:
\[ 15 - x = 10 \]

3. **Final Mathematical Expression:**
- The final mathematical expression representing the statement "The excess of 15 over x is 10" is:
\[ 15 - x = 10 \]