Subtract 20/7 from 63/8
1st number: 7 7/8, 2nd number: 2 6/7
63/8 - 20/7 is 281/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
63/8 = 63 × 7/8 × 7 = 441/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
20/7 = 20 × 8/7 × 8 = 160/56 - Subtract the two like fractions:
441/56 - 160/56 = 441 - 160/56 = 281/56 - In mixed form: 51/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/8-40/7 63/16-20/7 63/8-20/14 63/8-60/7 63/24-20/7 63/8-20/21 63/40-20/7 63/8-20/35 63/56-20/7 63/8-20/49