first, we turn both mixed numbers into improper fractions:
5 7/8 ----------->47/8
9 3/4 -------------> 39/4
LCD is 8:
47/8 stays the same because it already has a denominator of 8.
39/4 ----------> 78/8
so,
47/8:78/8
multiply both sides by 8 to get rid of the denominator "8"
so,
47:78