Subtract 2/81 from 3/16
3/16 - 2/81 is 211/1296.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 81 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 16 × 81 = 1296,
3/16 = 3 × 81/16 × 81 = 243/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
2/81 = 2 × 16/81 × 16 = 32/1296 - Subtract the two like fractions:
243/1296 - 32/1296 = 243 - 32/1296 = 211/1296
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/16-2/81 3/16-4/81 3/32-2/81 9/16-2/81 3/16-6/81 3/48-2/81 15/16-2/81 3/16-10/81 3/80-2/81 21/16-2/81 3/16-14/81