Subtract 7/15 from 15/70
15/70 - 7/15 is -53/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
15/70 = 15 × 3/70 × 3 = 45/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
7/15 = 7 × 14/15 × 14 = 98/210 - Subtract the two like fractions:
45/210 - 98/210 = 45 - 98/210 = -53/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70-7/15 15/70-14/15 15/70-7/30 45/70-7/15 15/70-21/15 15/70-7/45 75/70-7/15 15/70-35/15 15/70-7/75 15/70-49/15