Subtract 30/24 from 21/8
1st number: 2 5/8, 2nd number: 1 6/24
21/8 - 30/24 is 11/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 24 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 8 × 3 = 24,
21/8 = 21 × 3/8 × 3 = 63/24 - Likewise, for the 2nd fraction, since 24 × 1 = 24,
30/24 = 30 × 1/24 × 1 = 30/24 - Subtract the two like fractions:
63/24 - 30/24 = 63 - 30/24 = 33/24 - After reducing the fraction, the answer is 11/8
- In mixed form: 13/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/8-30/24 21/8-60/24 21/16-30/24 21/8-30/48 63/8-30/24 21/8-90/24 21/24-30/24 21/8-30/72 21/40-30/24 21/56-30/24