Subtract 50/81 from 15/4
1st number: 3 3/4, 2nd number: 50/81
15/4 - 50/81 is 1015/324.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
15/4 = 15 × 81/4 × 81 = 1215/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
50/81 = 50 × 4/81 × 4 = 200/324 - Subtract the two like fractions:
1215/324 - 200/324 = 1215 - 200/324 = 1015/324 - In mixed form: 343/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/4-50/81 15/8-50/81 45/4-50/81 15/12-50/81 75/4-50/81 15/20-50/81 15/28-50/81