Subtract 21/64 from 1/9
1/9 - 21/64 is -125/576.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 64 is 576
Next, find the equivalent fraction of both fractional numbers with denominator 576 - For the 1st fraction, since 9 × 64 = 576,
1/9 = 1 × 64/9 × 64 = 64/576 - Likewise, for the 2nd fraction, since 64 × 9 = 576,
21/64 = 21 × 9/64 × 9 = 189/576 - Subtract the two like fractions:
64/576 - 189/576 = 64 - 189/576 = -125/576
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/9-21/64 1/9-42/64 1/18-21/64 3/9-21/64 1/9-63/64 1/27-21/64 5/9-21/64 1/45-21/64 7/9-21/64 1/63-21/64