The length of steel rod exceeds that of a brass rod by 5 cm. If the difference in their lengths remains same at all temperature, then the length of brass rod will be: (`alpha` for iron and brass are `12xx10^(-6)//^(@)C` and `18xx10^(-6)//^(@)C`, respectively)

Explanation

To solve the problem, we need to find the length of the brass rod given that the length of the steel rod exceeds that of the brass rod by 5 cm and that this difference remains constant at all temperatures.

### Step-by-Step Solution:

1. **Define Variables**:
Let:
- \( L_s \) = length of the steel rod
- \( L_b \) = length of the brass rod
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