Subtract 21/16 from 8/27
1st number: 8/27, 2nd number: 1 5/16
8/27 - 21/16 is -439/432.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 16 is 432
Next, find the equivalent fraction of both fractional numbers with denominator 432 - For the 1st fraction, since 27 × 16 = 432,
8/27 = 8 × 16/27 × 16 = 128/432 - Likewise, for the 2nd fraction, since 16 × 27 = 432,
21/16 = 21 × 27/16 × 27 = 567/432 - Subtract the two like fractions:
128/432 - 567/432 = 128 - 567/432 = -439/432
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/27-21/16 8/27-42/16 8/54-21/16 8/27-21/32 24/27-21/16 8/27-63/16 8/81-21/16 8/27-21/48 40/27-21/16 8/27-21/80 56/27-21/16