Subtract 21/64 from 10/84
10/84 - 21/64 is -281/1344.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 84 × 16 = 1344,
10/84 = 10 × 16/84 × 16 = 160/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
21/64 = 21 × 21/64 × 21 = 441/1344 - Subtract the two like fractions:
160/1344 - 441/1344 = 160 - 441/1344 = -281/1344
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/84-21/64 10/84-42/64 30/84-21/64 10/84-63/64 50/84-21/64 70/84-21/64