Subtract 20/21 from 56/5
1st number: 11 1/5, 2nd number: 20/21
56/5 - 20/21 is 1076/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
56/5 = 56 × 21/5 × 21 = 1176/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
20/21 = 20 × 5/21 × 5 = 100/105 - Subtract the two like fractions:
1176/105 - 100/105 = 1176 - 100/105 = 1076/105 - In mixed form: 1026/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/5-40/21 56/10-20/21 56/5-20/42 56/5-60/21 56/15-20/21 56/5-20/63 56/25-20/21 56/35-20/21