Subtract 21/9 from 9/64
1st number: 9/64, 2nd number: 2 3/9
9/64 - 21/9 is -421/192.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 9 is 576
Next, find the equivalent fraction of both fractional numbers with denominator 576 - For the 1st fraction, since 64 × 9 = 576,
9/64 = 9 × 9/64 × 9 = 81/576 - Likewise, for the 2nd fraction, since 9 × 64 = 576,
21/9 = 21 × 64/9 × 64 = 1344/576 - Subtract the two like fractions:
81/576 - 1344/576 = 81 - 1344/576 = -1263/576 - After reducing the fraction, the answer is -421/192
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/64-21/9 9/64-42/9 9/64-21/18 27/64-21/9 9/64-63/9 9/64-21/27 45/64-21/9 9/64-21/45 63/64-21/9 9/64-21/63