Improper fraction 1: 2(3/4) = 2 + 3/4 = 11/3
Improper fraction 2: 5(4/5) = 5 + 4/5 = 29/5
2(3/4)+ 5(4/5), Apply the formula
(11 x 5) + (29 x 4) / 4x5 = 171/20
Change 171/20 to mixed number = 8(11/20)