Subtract 21/36 from 63/8
1st number: 7 7/8, 2nd number: 21/36
63/8 - 21/36 is 175/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 36 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
63/8 = 63 × 9/8 × 9 = 567/72 - Likewise, for the 2nd fraction, since 36 × 2 = 72,
21/36 = 21 × 2/36 × 2 = 42/72 - Subtract the two like fractions:
567/72 - 42/72 = 567 - 42/72 = 525/72 - After reducing the fraction, the answer is 175/24
- In mixed form: 77/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/8-42/36 63/16-21/36 63/8-21/72 63/8-63/36 63/24-21/36 63/40-21/36 63/56-21/36