Add 42/15 and 14/25, Solve 2 12/15 + 14/25 as a fraction

Add 42/15 and 14/25

1^st number: 2 12/15, 2^nd number: 14/25

42/15 + 14/25 is 84/25.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 25 is 75

Next, find the equivalent fraction of both fractional numbers with denominator 75
For the 1st fraction, since 15 × 5 = 75,
42/15 = 42 × 5/15 × 5 = 210/75
Likewise, for the 2nd fraction, since 25 × 3 = 75,
14/25 = 14 × 3/25 × 3 = 42/75
Add the two like fractions:
210/75 + 42/75 = 210 + 42/75 = 252/75
252/75 simplified gives 84/25
So, 42/15 + 14/25 = 84/25
In mixed form: 39/25

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad