Subtract 7/9 from 15/25
15/25 - 7/9 is -8/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 9 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 25 × 9 = 225,
15/25 = 15 × 9/25 × 9 = 135/225 - Likewise, for the 2nd fraction, since 9 × 25 = 225,
7/9 = 7 × 25/9 × 25 = 175/225 - Subtract the two like fractions:
135/225 - 175/225 = 135 - 175/225 = -40/225 - After reducing the fraction, the answer is -8/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/25-7/9 15/25-14/9 15/50-7/9 15/25-7/18 45/25-7/9 15/25-21/9 15/75-7/9 15/25-7/27 75/25-7/9 15/25-35/9 15/25-7/45 15/25-49/9 15/25-7/63