Subtract 28/30 from 4/15
4/15 - 28/30 is -2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
4/15 = 4 × 2/15 × 2 = 8/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
28/30 = 28 × 1/30 × 1 = 28/30 - Subtract the two like fractions:
8/30 - 28/30 = 8 - 28/30 = -20/30 - After reducing the fraction, the answer is -2/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/15-28/30 4/15-56/30 4/30-28/30 4/15-28/60 12/15-28/30 4/15-84/30 4/45-28/30 4/15-28/90 20/15-28/30 4/75-28/30 28/15-28/30