Subtract 25/70 from 5/15
5/15 - 25/70 is -1/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
5/15 = 5 × 14/15 × 14 = 70/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
25/70 = 25 × 3/70 × 3 = 75/210 - Subtract the two like fractions:
70/210 - 75/210 = 70 - 75/210 = -5/210 - After reducing the fraction, the answer is -1/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/15-25/70 5/15-50/70 5/30-25/70 5/15-75/70 5/45-25/70 25/15-25/70 5/75-25/70 35/15-25/70