Subtract 27/28 from 2/30
2/30 - 27/28 is -377/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
2/30 = 2 × 14/30 × 14 = 28/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
27/28 = 27 × 15/28 × 15 = 405/420 - Subtract the two like fractions:
28/420 - 405/420 = 28 - 405/420 = -377/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/30-27/28 2/30-54/28 2/60-27/28 2/30-27/56 6/30-27/28 2/30-81/28 2/90-27/28 2/30-27/84 10/30-27/28 14/30-27/28