Subtract 35/24 from 21/15
1st number: 1 6/15, 2nd number: 1 11/24
21/15 - 35/24 is -7/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
21/15 = 21 × 8/15 × 8 = 168/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
35/24 = 35 × 5/24 × 5 = 175/120 - Subtract the two like fractions:
168/120 - 175/120 = 168 - 175/120 = -7/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/15-35/24 21/15-70/24 21/30-35/24 21/15-35/48 63/15-35/24 21/45-35/24 21/15-35/72 21/75-35/24