Subtract 14/84 from 21/54
21/54 - 14/84 is 2/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 84 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 54 × 14 = 756,
21/54 = 21 × 14/54 × 14 = 294/756 - Likewise, for the 2nd fraction, since 84 × 9 = 756,
14/84 = 14 × 9/84 × 9 = 126/756 - Subtract the two like fractions:
294/756 - 126/756 = 294 - 126/756 = 168/756 - 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: 42/54-14/84 21/54-28/84 63/54-14/84 21/54-42/84 21/54-70/84 21/54-98/84