Subtract 10/84 from 2/81
2/81 - 10/84 is -107/1134.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 84 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 81 × 28 = 2268,
2/81 = 2 × 28/81 × 28 = 56/2268 - Likewise, for the 2nd fraction, since 84 × 27 = 2268,
10/84 = 10 × 27/84 × 27 = 270/2268 - Subtract the two like fractions:
56/2268 - 270/2268 = 56 - 270/2268 = -214/2268 - After reducing the fraction, the answer is -107/1134
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/81-10/84 2/81-20/84 6/81-10/84 2/81-30/84 10/81-10/84 2/81-50/84 14/81-10/84 2/81-70/84