To solve , simply subtract the numerators since the denominators are the same: . Thus, you have . You can also think of this in a fun way: imagine you have 9 slices of delicious pie and you give away 2; you’re left with 7 delightful slices to enjoy!

Now, if you ever find yourself in a situation where you have different denominators, a common mistake is forgetting to find a common denominator before subtracting. Always remember to do that first, and you’ll be on your way to pie—or math—perfection!