Subtract 63/30 from 28/15
1st number: 1 13/15, 2nd number: 2 3/30
28/15 - 63/30 is -7/30.
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,
28/15 = 28 × 2/15 × 2 = 56/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
63/30 = 63 × 1/30 × 1 = 63/30 - Subtract the two like fractions:
56/30 - 63/30 = 56 - 63/30 = -7/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15-63/30 28/30-63/30 28/15-63/60 84/15-63/30 28/45-63/30 28/15-63/90 28/75-63/30