Subtract 28/21 from 14/9
1st number: 1 5/9, 2nd number: 1 7/21
14/9 - 28/21 is 2/9.
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,
14/9 = 14 × 7/9 × 7 = 98/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
28/21 = 28 × 3/21 × 3 = 84/63 - Subtract the two like fractions:
98/63 - 84/63 = 98 - 84/63 = 14/63 - After reducing the fraction, the answer is 2/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/9-28/21 14/9-56/21 14/18-28/21 14/9-28/42 42/9-28/21 14/9-84/21 14/27-28/21 14/9-28/63 70/9-28/21 14/45-28/21 98/9-28/21 14/63-28/21