Subtract 30/81 from 14/84
14/84 - 30/81 is -11/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 84 × 27 = 2268,
14/84 = 14 × 27/84 × 27 = 378/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
30/81 = 30 × 28/81 × 28 = 840/2268 - Subtract the two like fractions:
378/2268 - 840/2268 = 378 - 840/2268 = -462/2268 - After reducing the fraction, the answer is -11/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/84-30/81 14/84-60/81 42/84-30/81 14/84-90/81 70/84-30/81 98/84-30/81