Subtract 1/64 from 21/12
1st number: 1 9/12, 2nd number: 1/64
21/12 - 1/64 is 111/64.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 64 is 192
Next, find the equivalent fraction of both fractional numbers with denominator 192 - For the 1st fraction, since 12 × 16 = 192,
21/12 = 21 × 16/12 × 16 = 336/192 - Likewise, for the 2nd fraction, since 64 × 3 = 192,
1/64 = 1 × 3/64 × 3 = 3/192 - Subtract the two like fractions:
336/192 - 3/192 = 336 - 3/192 = 333/192 - After reducing the fraction, the answer is 111/64
- In mixed form: 147/64
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/12-1/64 21/12-2/64 21/24-1/64 63/12-1/64 21/12-3/64 21/36-1/64 21/12-5/64 21/60-1/64 21/12-7/64 21/84-1/64