Subtract 63/20 from 10/28
1st number: 10/28, 2nd number: 3 3/20
10/28 - 63/20 is -391/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
10/28 = 10 × 5/28 × 5 = 50/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
63/20 = 63 × 7/20 × 7 = 441/140 - Subtract the two like fractions:
50/140 - 441/140 = 50 - 441/140 = -391/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/28-63/20 10/56-63/20 10/28-63/40 30/28-63/20 10/84-63/20 10/28-63/60 50/28-63/20 70/28-63/20