Answer:
3 1/8 - 1 7/8 = 1 2/8
Step-by-step explanation:
First, I changed 3 1/8 into 2 9/8 so it would be easier to work with. Then, I subtracted the top number of the fraction by 7. You always keep the bottom #, so it was just 1 2/8. The question isn't asking for you to simplify the answer, but later on it mostly likely will. 1 2/8 simplified is 1 1/4.
