Subtract 63/84 from 21/16
1st number: 1 5/16, 2nd number: 63/84
21/16 - 63/84 is 9/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 84 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
21/16 = 21 × 21/16 × 21 = 441/336 - Likewise, for the 2nd fraction, since 84 × 4 = 336,
63/84 = 63 × 4/84 × 4 = 252/336 - Subtract the two like fractions:
441/336 - 252/336 = 441 - 252/336 = 189/336 - After reducing the fraction, the answer is 9/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/16-63/84 21/32-63/84 63/16-63/84 21/48-63/84 21/80-63/84