Add 30/15 and 18/28
1st number: 2 0/15, 2nd number: 18/28
30/15 + 18/28 is 37/14.
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,
30/15 = 30 × 28/15 × 28 = 840/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
18/28 = 18 × 15/28 × 15 = 270/420 - Add the two like fractions:
840/420 + 270/420 = 840 + 270/420 = 1110/420 - 1110/420 simplified gives 37/14
- So, 30/15 + 18/28 = 37/14
In mixed form: 29/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/15+18/28 30/15+36/28 30/15+18/56 90/15+18/28 30/15+54/28 30/45+18/28 30/15+18/84 30/15+90/28 30/75+18/28