Subtract 56/36 from 21/12
1st number: 1 9/12, 2nd number: 1 20/36
21/12 - 56/36 is 7/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
21/12 = 21 × 3/12 × 3 = 63/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
56/36 = 56 × 1/36 × 1 = 56/36 - Subtract the two like fractions:
63/36 - 56/36 = 63 - 56/36 = 7/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/12-56/36 21/24-56/36 21/12-56/72 63/12-56/36 21/36-56/36 21/60-56/36 21/84-56/36