Add 30/28 and 16/15
1st number: 1 2/28, 2nd number: 1 1/15
30/28 + 16/15 is 449/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
30/28 = 30 × 15/28 × 15 = 450/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
16/15 = 16 × 28/15 × 28 = 448/420 - Add the two like fractions:
450/420 + 448/420 = 450 + 448/420 = 898/420 - 898/420 simplified gives 449/210
- So, 30/28 + 16/15 = 449/210
In mixed form: 229/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/28+16/15 30/28+32/15 30/56+16/15 30/28+16/30 90/28+16/15 30/28+48/15 30/84+16/15 30/28+16/45 30/28+80/15 30/28+16/75