Subtract 18/64 from 9/21
9/21 - 18/64 is 33/224.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 21 × 64 = 1344,
9/21 = 9 × 64/21 × 64 = 576/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
18/64 = 18 × 21/64 × 21 = 378/1344 - Subtract the two like fractions:
576/1344 - 378/1344 = 576 - 378/1344 = 198/1344 - After reducing the fraction, the answer is 33/224
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21-18/64 9/21-36/64 9/42-18/64 27/21-18/64 9/21-54/64 9/63-18/64 45/21-18/64 9/21-90/64 63/21-18/64