Subtract 5/56 from 21/5
1st number: 4 1/5, 2nd number: 5/56
21/5 - 5/56 is 1151/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 5 × 56 = 280,
21/5 = 21 × 56/5 × 56 = 1176/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
5/56 = 5 × 5/56 × 5 = 25/280 - Subtract the two like fractions:
1176/280 - 25/280 = 1176 - 25/280 = 1151/280 - In mixed form: 431/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5-5/56 21/5-10/56 21/10-5/56 63/5-5/56 21/5-15/56 21/15-5/56 21/5-25/56 21/25-5/56 21/5-35/56 21/35-5/56