Subtract 2/14 from 21/54
21/54 - 2/14 is 31/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 14 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
21/54 = 21 × 7/54 × 7 = 147/378 - Likewise, for the 2nd fraction, since 14 × 27 = 378,
2/14 = 2 × 27/14 × 27 = 54/378 - Subtract the two like fractions:
147/378 - 54/378 = 147 - 54/378 = 93/378 - After reducing the fraction, the answer is 31/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/54-2/14 21/54-4/14 21/54-2/28 63/54-2/14 21/54-6/14 21/54-2/42 21/54-10/14 21/54-2/70 21/54-2/98