Subtract 24/9 from 4/21
1st number: 4/21, 2nd number: 2 6/9
4/21 - 24/9 is -52/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
4/21 = 4 × 3/21 × 3 = 12/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
24/9 = 24 × 7/9 × 7 = 168/63 - Subtract the two like fractions:
12/63 - 168/63 = 12 - 168/63 = -156/63 - After reducing the fraction, the answer is -52/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/21-24/9 4/21-48/9 4/42-24/9 4/21-24/18 12/21-24/9 4/21-72/9 4/63-24/9 4/21-24/27 20/21-24/9 4/21-24/45 28/21-24/9 4/21-24/63