Subtract 21/56 from 10/20
10/20 - 21/56 is 1/8.
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,
10/20 = 10 × 14/20 × 14 = 140/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
21/56 = 21 × 5/56 × 5 = 105/280 - Subtract the two like fractions:
140/280 - 105/280 = 140 - 105/280 = 35/280 - After reducing the fraction, the answer is 1/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20-42/56 10/40-21/56 30/20-21/56 10/20-63/56 10/60-21/56 50/20-21/56 70/20-21/56