Subtract 75/81 from 14/28
14/28 - 75/81 is -23/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 28 × 81 = 2268,
14/28 = 14 × 81/28 × 81 = 1134/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
75/81 = 75 × 28/81 × 28 = 2100/2268 - Subtract the two like fractions:
1134/2268 - 2100/2268 = 1134 - 2100/2268 = -966/2268 - After reducing the fraction, the answer is -23/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/56-75/81 42/28-75/81 14/84-75/81 70/28-75/81 98/28-75/81