Subtract 80/63 from 7/8
1st number: 7/8, 2nd number: 1 17/63
7/8 - 80/63 is -199/504.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 8 × 63 = 504,
7/8 = 7 × 63/8 × 63 = 441/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
80/63 = 80 × 8/63 × 8 = 640/504 - Subtract the two like fractions:
441/504 - 640/504 = 441 - 640/504 = -199/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/8-80/63 7/16-80/63 21/8-80/63 7/24-80/63 35/8-80/63 7/40-80/63 49/8-80/63 7/56-80/63