Subtract 21/16 from 63/20
1st number: 3 3/20, 2nd number: 1 5/16
63/20 - 21/16 is 147/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
63/20 = 63 × 4/20 × 4 = 252/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
21/16 = 21 × 5/16 × 5 = 105/80 - Subtract the two like fractions:
252/80 - 105/80 = 252 - 105/80 = 147/80 - In mixed form: 167/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/20-42/16 63/40-21/16 63/20-21/32 63/20-63/16 63/60-21/16 63/20-21/48 63/20-21/80