Subtract 18/7 from 63/8
1st number: 7 7/8, 2nd number: 2 4/7
63/8 - 18/7 is 297/56.
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,
18/7 = 18 × 8/7 × 8 = 144/56 - Subtract the two like fractions:
441/56 - 144/56 = 441 - 144/56 = 297/56 - In mixed form: 517/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/8-36/7 63/16-18/7 63/8-18/14 63/8-54/7 63/24-18/7 63/8-18/21 63/8-90/7 63/40-18/7 63/8-18/35 63/56-18/7 63/8-18/49