Subtract 64/27 from 21/36
1st number: 21/36, 2nd number: 2 10/27
21/36 - 64/27 is -193/108.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 36 × 3 = 108,
21/36 = 21 × 3/36 × 3 = 63/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
64/27 = 64 × 4/27 × 4 = 256/108 - Subtract the two like fractions:
63/108 - 256/108 = 63 - 256/108 = -193/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/36-64/27 21/72-64/27 21/36-64/54 63/36-64/27 21/36-64/81