Subtract 9/28 from 18/25
18/25 - 9/28 is 279/700.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 28 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 25 × 28 = 700,
18/25 = 18 × 28/25 × 28 = 504/700 - Likewise, for the 2nd fraction, since 28 × 25 = 700,
9/28 = 9 × 25/28 × 25 = 225/700 - Subtract the two like fractions:
504/700 - 225/700 = 504 - 225/700 = 279/700
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/25-9/28 18/25-18/28 18/50-9/28 18/25-9/56 54/25-9/28 18/25-27/28 18/75-9/28 18/25-9/84 90/25-9/28 18/25-45/28 18/25-63/28