Subtract 21/16 from 15/10
1st number: 1 5/10, 2nd number: 1 5/16
15/10 - 21/16 is 3/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 10 × 8 = 80,
15/10 = 15 × 8/10 × 8 = 120/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
21/16 = 21 × 5/16 × 5 = 105/80 - Subtract the two like fractions:
120/80 - 105/80 = 120 - 105/80 = 15/80 - After reducing the fraction, the answer is 3/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/10-21/16 15/10-42/16 15/20-21/16 15/10-21/32 45/10-21/16 15/10-63/16 15/30-21/16 15/10-21/48 75/10-21/16 15/50-21/16 15/10-21/80 15/70-21/16