Subtract 16/21 from 56/12
1st number: 4 8/12, 2nd number: 16/21
56/12 - 16/21 is 82/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
56/12 = 56 × 7/12 × 7 = 392/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
16/21 = 16 × 4/21 × 4 = 64/84 - Subtract the two like fractions:
392/84 - 64/84 = 392 - 64/84 = 328/84 - After reducing the fraction, the answer is 82/21
- In mixed form: 319/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12-32/21 56/24-16/21 56/12-16/42 56/12-48/21 56/36-16/21 56/12-16/63 56/12-80/21 56/60-16/21 56/84-16/21