What is four fifths plus three quarters?

Answer 1

4/5 + 3/4 = 1 11/20.

To add fractions, you must first make sure that they have the same denominator. We can change 4/5 to 16/20 and 3/4 to 15/20. 16+15=31, so your answer is:

improper fraction: 31/20

mixed number: 1 11/20.

Answer 2

Expressed as a mixed number in its simplest form, 3/4 + 4/5 = 1 11/20 (that is, one and eleven twentieths). Expressed as a decimal, this is equal to 1.55.