Add 6/28 and 21/30
6/28 + 21/30 is 32/35.
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,
6/28 = 6 × 15/28 × 15 = 90/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
21/30 = 21 × 14/30 × 14 = 294/420 - Add the two like fractions:
90/420 + 294/420 = 90 + 294/420 = 384/420 - 384/420 simplified gives 32/35
- So, 6/28 + 21/30 = 32/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/28+21/30 6/28+42/30 6/56+21/30 6/28+21/60 18/28+21/30 6/28+63/30 6/84+21/30 6/28+21/90 30/28+21/30 42/28+21/30