Subtract 24/3 from 21/8
1st number: 2 5/8, 2nd number: 8 0/3
21/8 - 24/3 is -43/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 3 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 3 × 8 = 24,
24/3 = 24 × 8/3 × 8 = 192/24 - Subtract the two like fractions:
63/24 - 192/24 = 63 - 192/24 = -129/24 - After reducing the fraction, the answer is -43/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/8-24/3 21/8-48/3 21/16-24/3 21/8-24/6 63/8-24/3 21/8-72/3 21/24-24/3 21/8-24/9 21/40-24/3 21/8-24/15 21/56-24/3 21/8-24/21