Subtract 32/81 from 63/84
63/84 - 32/81 is 115/324.
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,
63/84 = 63 × 27/84 × 27 = 1701/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
32/81 = 32 × 28/81 × 28 = 896/2268 - Subtract the two like fractions:
1701/2268 - 896/2268 = 1701 - 896/2268 = 805/2268 - After reducing the fraction, the answer is 115/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/84-64/81 63/84-96/81