Subtract 5/21 from 24/9
1st number: 2 6/9, 2nd number: 5/21
24/9 - 5/21 is 17/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
24/9 = 24 × 7/9 × 7 = 168/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
5/21 = 5 × 3/21 × 3 = 15/63 - Subtract the two like fractions:
168/63 - 15/63 = 168 - 15/63 = 153/63 - After reducing the fraction, the answer is 17/7
- In mixed form: 23/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/9-5/21 24/9-10/21 24/18-5/21 24/9-5/42 72/9-5/21 24/9-15/21 24/27-5/21 24/9-5/63 24/9-25/21 24/45-5/21 24/9-35/21 24/63-5/21