Answer:
yard.
Explanation:
You have the following information given in the problem:
- You have 3/4 yard of felt.
- You used 1/8 yard,
Therefore, to find the fraction of a yard of felt that you have left over (which you can call x), you only need to subtract 3/4yard and 1/8 yard, as you can see below:
![x=(3)/(4)yard-(1)/(8)yard\\\\x=(5)/(8)yard](https://img.qammunity.org/2020/formulas/mathematics/middle-school/punk26lx8shixl40lgcy0x662050o96rv0.png)