Subtract 18/45 from 18/25
18/25 - 18/45 is 8/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 45 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 25 × 9 = 225,
18/25 = 18 × 9/25 × 9 = 162/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
18/45 = 18 × 5/45 × 5 = 90/225 - Subtract the two like fractions:
162/225 - 90/225 = 162 - 90/225 = 72/225 - After reducing the fraction, the answer is 8/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/25-18/45 18/25-36/45 18/50-18/45 18/25-18/90 54/25-18/45 18/25-54/45 18/75-18/45 90/25-18/45 18/25-90/45