Subtract 21/12 from 16/24
1st number: 16/24, 2nd number: 1 9/12
16/24 - 21/12 is -13/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 12 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 24 × 1 = 24,
16/24 = 16 × 1/24 × 1 = 16/24 - Likewise, for the 2nd fraction, since 12 × 2 = 24,
21/12 = 21 × 2/12 × 2 = 42/24 - Subtract the two like fractions:
16/24 - 42/24 = 16 - 42/24 = -26/24 - After reducing the fraction, the answer is -13/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/24-21/12 16/24-42/12 16/48-21/12 16/24-21/24 48/24-21/12 16/24-63/12 16/72-21/12 16/24-21/36 80/24-21/12 16/24-21/60 16/24-21/84