Subtract 21/18 from 5/64
1st number: 5/64, 2nd number: 1 3/18
5/64 - 21/18 is -209/192.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 18 is 576
Next, find the equivalent fraction of both fractional numbers with denominator 576 - For the 1st fraction, since 64 × 9 = 576,
5/64 = 5 × 9/64 × 9 = 45/576 - Likewise, for the 2nd fraction, since 18 × 32 = 576,
21/18 = 21 × 32/18 × 32 = 672/576 - Subtract the two like fractions:
45/576 - 672/576 = 45 - 672/576 = -627/576 - After reducing the fraction, the answer is -209/192
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/64-21/18 5/64-42/18 5/64-21/36 15/64-21/18 5/64-63/18 5/64-21/54 25/64-21/18 5/64-21/90 35/64-21/18