Subtract 21/12 from 56/16
1st number: 3 8/16, 2nd number: 1 9/12
56/16 - 21/12 is 7/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 12 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 16 × 3 = 48,
56/16 = 56 × 3/16 × 3 = 168/48 - Likewise, for the 2nd fraction, since 12 × 4 = 48,
21/12 = 21 × 4/12 × 4 = 84/48 - Subtract the two like fractions:
168/48 - 84/48 = 168 - 84/48 = 84/48 - After reducing the fraction, the answer is 7/4
- In mixed form: 13/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/16-42/12 56/32-21/12 56/16-21/24 56/16-63/12 56/48-21/12 56/16-21/36 56/80-21/12 56/16-21/60 56/16-21/84