find the difference: 7 7/8 - 3 1/4

7 7/8 - 3 1/4 = 7-3 + 7/8-2/8 = 4 5/8

[latex]7 \frac{7}{8}-3 \frac{1}{4}=7 \frac{7}{8}-3 \frac{2}{8}=4 \frac{5}{8} [/latex]