Subtract 1/8 from 21/3
1st number: 7 0/3, 2nd number: 1/8
21/3 - 1/8 is 55/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 8 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 3 × 8 = 24,
21/3 = 21 × 8/3 × 8 = 168/24 - Likewise, for the 2nd fraction, since 8 × 3 = 24,
1/8 = 1 × 3/8 × 3 = 3/24 - Subtract the two like fractions:
168/24 - 3/24 = 168 - 3/24 = 165/24 - After reducing the fraction, the answer is 55/8
- In mixed form: 67/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3-1/8 21/3-2/8 21/6-1/8 21/3-1/16 63/3-1/8 21/3-3/8 21/9-1/8 21/3-1/24 21/3-5/8 21/15-1/8 21/3-1/40 21/3-7/8 21/3-1/56