Subtract 63/10 from 81/4
1st number: 20 1/4, 2nd number: 6 3/10
81/4 - 63/10 is 279/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
81/4 = 81 × 5/4 × 5 = 405/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
63/10 = 63 × 2/10 × 2 = 126/20 - Subtract the two like fractions:
405/20 - 126/20 = 405 - 126/20 = 279/20 - In mixed form: 1319/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/8-63/10 81/4-63/20 81/12-63/10 81/4-63/30 81/20-63/10 81/4-63/50 81/28-63/10 81/4-63/70