Subtract 16/81 from 63/84
63/84 - 16/81 is 179/324.
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,
16/81 = 16 × 28/81 × 28 = 448/2268 - Subtract the two like fractions:
1701/2268 - 448/2268 = 1701 - 448/2268 = 1253/2268 - After reducing the fraction, the answer is 179/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/84-32/81 63/84-48/81 63/84-80/81