Subtract 49/75 from 21/15
1st number: 1 6/15, 2nd number: 49/75
21/15 - 49/75 is 56/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 75 is 75
Next, find the equivalent fraction of both fractional numbers with denominator 75 - For the 1st fraction, since 15 × 5 = 75,
21/15 = 21 × 5/15 × 5 = 105/75 - Likewise, for the 2nd fraction, since 75 × 1 = 75,
49/75 = 49 × 1/75 × 1 = 49/75 - Subtract the two like fractions:
105/75 - 49/75 = 105 - 49/75 = 56/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/15-49/75 21/15-98/75 21/30-49/75 63/15-49/75 21/45-49/75 21/75-49/75