Add 25/15 and 42/28
1st number: 1 10/15, 2nd number: 1 14/28
25/15 + 42/28 is 19/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
25/15 = 25 × 28/15 × 28 = 700/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
42/28 = 42 × 15/28 × 15 = 630/420 - Add the two like fractions:
700/420 + 630/420 = 700 + 630/420 = 1330/420 - 1330/420 simplified gives 19/6
- So, 25/15 + 42/28 = 19/6
In mixed form: 31/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/15+42/28 25/15+84/28 25/30+42/28 25/15+42/56 75/15+42/28 25/45+42/28 25/15+42/84 25/75+42/28