Subtract 81/16 from 1/9
1st number: 1/9, 2nd number: 5 1/16
1/9 - 81/16 is -713/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 9 × 16 = 144,
1/9 = 1 × 16/9 × 16 = 16/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
81/16 = 81 × 9/16 × 9 = 729/144 - Subtract the two like fractions:
16/144 - 729/144 = 16 - 729/144 = -713/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/9-81/16 1/18-81/16 1/9-81/32 3/9-81/16 1/27-81/16 1/9-81/48 5/9-81/16 1/45-81/16 1/9-81/80 7/9-81/16 1/63-81/16