Subtract 63/4 from 10/81
1st number: 10/81, 2nd number: 15 3/4
10/81 - 63/4 is -5063/324.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 4 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
10/81 = 10 × 4/81 × 4 = 40/324 - Likewise, for the 2nd fraction, since 4 × 81 = 324,
63/4 = 63 × 81/4 × 81 = 5103/324 - Subtract the two like fractions:
40/324 - 5103/324 = 40 - 5103/324 = -5063/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/81-63/4 10/81-63/8 30/81-63/4 10/81-63/12 50/81-63/4 10/81-63/20 70/81-63/4 10/81-63/28