Subtract 21/16 from 45/3
1st number: 15 0/3, 2nd number: 1 5/16
45/3 - 21/16 is 219/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 16 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 3 × 16 = 48,
45/3 = 45 × 16/3 × 16 = 720/48 - Likewise, for the 2nd fraction, since 16 × 3 = 48,
21/16 = 21 × 3/16 × 3 = 63/48 - Subtract the two like fractions:
720/48 - 63/48 = 720 - 63/48 = 657/48 - After reducing the fraction, the answer is 219/16
- In mixed form: 1311/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/3-21/16 45/3-42/16 45/6-21/16 45/3-21/32 45/3-63/16 45/9-21/16 45/3-21/48 45/15-21/16 45/3-21/80 45/21-21/16