Solutions by everydaycalculation.com

25 + 39 is 1115.

- Find the least common denominator or LCM of the two denominators:

LCM of 5 and 9 is**45**

Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,

25 = 2 × 95 × 9 = 1845 - Likewise, for the 2nd fraction, since 9 × 5 = 45,

39 = 3 × 59 × 5 = 1545 - Add the two like fractions:

1845 + 1545 = 18 + 1545 = 3345 - 33/45 simplified gives 1115
- So, 2/5 + 3/9 = 11/15

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