5 7/8 - 2 9/10
we can make 5 7/8 into an improper fraction of 47/8
we can also make 2 9/10 into an improper fraction of 29/10
find a common multiple between the denominators 10 and 8 - the smallest would be 40
47/8 will be made into 235/40
29/10 will be made into 116/40
235/40 - 116/40 = 119/40
simplify 119/40 and you get 2 39/40
decimal form is 2.975
