Subtract 45/21 from 63/16
1st number: 3 15/16, 2nd number: 2 3/21
63/16 - 45/21 is 201/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
63/16 = 63 × 21/16 × 21 = 1323/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
45/21 = 45 × 16/21 × 16 = 720/336 - Subtract the two like fractions:
1323/336 - 720/336 = 1323 - 720/336 = 603/336 - After reducing the fraction, the answer is 201/112
- In mixed form: 189/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/16-90/21 63/32-45/21 63/16-45/42 63/48-45/21 63/16-45/63 63/80-45/21