Subtract 21/5 from 63/2
1st number: 31 1/2, 2nd number: 4 1/5
63/2 - 21/5 is 273/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 5 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 2 × 5 = 10,
63/2 = 63 × 5/2 × 5 = 315/10 - Likewise, for the 2nd fraction, since 5 × 2 = 10,
21/5 = 21 × 2/5 × 2 = 42/10 - Subtract the two like fractions:
315/10 - 42/10 = 315 - 42/10 = 273/10 - In mixed form: 273/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/2-42/5 63/4-21/5 63/2-21/10 63/2-63/5 63/6-21/5 63/2-21/15 63/10-21/5 63/2-21/25 63/14-21/5 63/2-21/35