Add 1/28 and 28/30
1/28 + 28/30 is 407/420.
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,
1/28 = 1 × 15/28 × 15 = 15/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
28/30 = 28 × 14/30 × 14 = 392/420 - Add the two like fractions:
15/420 + 392/420 = 15 + 392/420 = 407/420 - So, 1/28 + 28/30 = 407/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/28+28/30 1/28+56/30 1/56+28/30 1/28+28/60 3/28+28/30 1/28+84/30 1/84+28/30 1/28+28/90 5/28+28/30 7/28+28/30