How do you add 5\frac { 9} { 10} + 2\frac { 5} { 8}?

1 Answer
Mar 3, 2018

Convert both into improper fractions.

Explanation:

5 9/10 = (5(10) + 9)/10 = 59/10

2 5/8 = (2(8) + 5)/8 = 21/8

So the expression becomes

59/10 + 21/8

Multiply fractions by a common factor to get the same denominator:

59/10 * 8/8 + 21/8 * 10/10

= 472/80 + 210/80

Then just add them to get 682/80 and simplify:

Answer: 341/40 = 8 21/40