Subtract 14/30 from 21/9
1st number: 2 3/9, 2nd number: 14/30
21/9 - 14/30 is 28/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
21/9 = 21 × 10/9 × 10 = 210/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
14/30 = 14 × 3/30 × 3 = 42/90 - Subtract the two like fractions:
210/90 - 42/90 = 210 - 42/90 = 168/90 - After reducing the fraction, the answer is 28/15
- In mixed form: 113/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/9-14/30 21/9-28/30 21/18-14/30 21/9-14/60 63/9-14/30 21/9-42/30 21/27-14/30 21/9-14/90 21/9-70/30 21/45-14/30 21/9-98/30 21/63-14/30