Subtract 7/16 from 2/81
2/81 - 7/16 is -535/1296.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 16 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 81 × 16 = 1296,
2/81 = 2 × 16/81 × 16 = 32/1296 - Likewise, for the 2nd fraction, since 16 × 81 = 1296,
7/16 = 7 × 81/16 × 81 = 567/1296 - Subtract the two like fractions:
32/1296 - 567/1296 = 32 - 567/1296 = -535/1296
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/81-7/16 2/81-14/16 2/81-7/32 6/81-7/16 2/81-21/16 2/81-7/48 10/81-7/16 2/81-35/16 2/81-7/80 14/81-7/16 2/81-49/16