Add 21/28 and 14/30
21/28 + 14/30 is 73/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
21/28 = 21 × 15/28 × 15 = 315/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
14/30 = 14 × 14/30 × 14 = 196/420 - Add the two like fractions:
315/420 + 196/420 = 315 + 196/420 = 511/420 - 511/420 simplified gives 73/60
- So, 21/28 + 14/30 = 73/60
In mixed form: 113/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28+14/30 21/28+28/30 21/56+14/30 21/28+14/60 63/28+14/30 21/28+42/30 21/84+14/30 21/28+14/90 21/28+70/30 21/28+98/30