Subtract 24/81 from 2/84
2/84 - 24/81 is -103/378.
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,
2/84 = 2 × 27/84 × 27 = 54/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
24/81 = 24 × 28/81 × 28 = 672/2268 - Subtract the two like fractions:
54/2268 - 672/2268 = 54 - 672/2268 = -618/2268 - After reducing the fraction, the answer is -103/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/84-24/81 2/84-48/81 6/84-24/81 2/84-72/81 10/84-24/81 14/84-24/81