Subtract 21/12 from 16/10
1st number: 1 6/10, 2nd number: 1 9/12
16/10 - 21/12 is -3/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 10 × 6 = 60,
16/10 = 16 × 6/10 × 6 = 96/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
21/12 = 21 × 5/12 × 5 = 105/60 - Subtract the two like fractions:
96/60 - 105/60 = 96 - 105/60 = -9/60 - After reducing the fraction, the answer is -3/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/10-21/12 16/10-42/12 16/20-21/12 16/10-21/24 48/10-21/12 16/10-63/12 16/30-21/12 16/10-21/36 80/10-21/12 16/50-21/12 16/10-21/60 16/70-21/12 16/10-21/84