Subtract 18/21 from 56/14
1st number: 4 0/14, 2nd number: 18/21
56/14 - 18/21 is 22/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
56/14 = 56 × 3/14 × 3 = 168/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
18/21 = 18 × 2/21 × 2 = 36/42 - Subtract the two like fractions:
168/42 - 36/42 = 168 - 36/42 = 132/42 - After reducing the fraction, the answer is 22/7
- In mixed form: 31/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/14-36/21 56/28-18/21 56/14-18/42 56/14-54/21 56/42-18/21 56/14-18/63 56/14-90/21 56/70-18/21 56/98-18/21