Subtract 18/25 from 15/18
15/18 - 18/25 is 17/150.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 25 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 18 × 25 = 450,
15/18 = 15 × 25/18 × 25 = 375/450 - Likewise, for the 2nd fraction, since 25 × 18 = 450,
18/25 = 18 × 18/25 × 18 = 324/450 - Subtract the two like fractions:
375/450 - 324/450 = 375 - 324/450 = 51/450 - After reducing the fraction, the answer is 17/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18-18/25 15/18-36/25 15/36-18/25 15/18-18/50 45/18-18/25 15/18-54/25 15/54-18/25 15/18-18/75 75/18-18/25 15/18-90/25 15/90-18/25