Subtract 49/56 from 21/20
1st number: 1 1/20, 2nd number: 49/56
21/20 - 49/56 is 7/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
21/20 = 21 × 14/20 × 14 = 294/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
49/56 = 49 × 5/56 × 5 = 245/280 - Subtract the two like fractions:
294/280 - 245/280 = 294 - 245/280 = 49/280 - After reducing the fraction, the answer is 7/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/20-49/56 21/20-98/56 21/40-49/56 63/20-49/56 21/60-49/56