Subtract 63/32 from 21/8
1st number: 2 5/8, 2nd number: 1 31/32
21/8 - 63/32 is 21/32.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 32 is 32
Next, find the equivalent fraction of both fractional numbers with denominator 32 - For the 1st fraction, since 8 × 4 = 32,
21/8 = 21 × 4/8 × 4 = 84/32 - Likewise, for the 2nd fraction, since 32 × 1 = 32,
63/32 = 63 × 1/32 × 1 = 63/32 - Subtract the two like fractions:
84/32 - 63/32 = 84 - 63/32 = 21/32
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/8-63/32 21/16-63/32 21/8-63/64 63/8-63/32 21/24-63/32 21/8-63/96 21/40-63/32 21/56-63/32