Subtract 15/18 from 81/25
1st number: 3 6/25, 2nd number: 15/18
81/25 - 15/18 is 361/150.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
81/25 = 81 × 18/25 × 18 = 1458/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
15/18 = 15 × 25/18 × 25 = 375/450 - Subtract the two like fractions:
1458/450 - 375/450 = 1458 - 375/450 = 1083/450 - After reducing the fraction, the answer is 361/150
- In mixed form: 261/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/25-30/18 81/50-15/18 81/25-15/36 81/25-45/18 81/75-15/18 81/25-15/54 81/25-75/18 81/25-15/90