Subtract 15/32 from 21/12
1st number: 1 9/12, 2nd number: 15/32
21/12 - 15/32 is 41/32.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 32 is 96
Next, find the equivalent fraction of both fractional numbers with denominator 96 - For the 1st fraction, since 12 × 8 = 96,
21/12 = 21 × 8/12 × 8 = 168/96 - Likewise, for the 2nd fraction, since 32 × 3 = 96,
15/32 = 15 × 3/32 × 3 = 45/96 - Subtract the two like fractions:
168/96 - 45/96 = 168 - 45/96 = 123/96 - After reducing the fraction, the answer is 41/32
- In mixed form: 19/32
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/12-15/32 21/12-30/32 21/24-15/32 21/12-15/64 63/12-15/32 21/12-45/32 21/36-15/32 21/12-15/96 21/12-75/32 21/60-15/32 21/84-15/32