Subtract 15/70 from 3/15
3/15 - 15/70 is -1/70.
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,
3/15 = 3 × 14/15 × 14 = 42/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
15/70 = 15 × 3/70 × 3 = 45/210 - Subtract the two like fractions:
42/210 - 45/210 = 42 - 45/210 = -3/210 - After reducing the fraction, the answer is -1/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/15-15/70 3/15-30/70 3/30-15/70 9/15-15/70 3/15-45/70 3/45-15/70 3/15-75/70 3/75-15/70 21/15-15/70