Subtract 25/30 from 5/15
5/15 - 25/30 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
5/15 = 5 × 2/15 × 2 = 10/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
25/30 = 25 × 1/30 × 1 = 25/30 - Subtract the two like fractions:
10/30 - 25/30 = 10 - 25/30 = -15/30 - After reducing the fraction, the answer is -1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/15-25/30 5/15-50/30 5/30-25/30 5/15-25/60 5/15-75/30 5/45-25/30 5/15-25/90 25/15-25/30 5/75-25/30 35/15-25/30