Subtract 21/54 from 14/7
1st number: 2 0/7, 2nd number: 21/54
14/7 - 21/54 is 29/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 7 × 54 = 378,
14/7 = 14 × 54/7 × 54 = 756/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
21/54 = 21 × 7/54 × 7 = 147/378 - Subtract the two like fractions:
756/378 - 147/378 = 756 - 147/378 = 609/378 - After reducing the fraction, the answer is 29/18
- In mixed form: 111/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/7-21/54 14/7-42/54 42/7-21/54 14/7-63/54 14/21-21/54 70/7-21/54 14/35-21/54 98/7-21/54 14/49-21/54