Subtract 1/15 from 15/70
15/70 - 1/15 is 31/210.
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,
1/15 = 1 × 14/15 × 14 = 14/210 - Subtract the two like fractions:
45/210 - 14/210 = 45 - 14/210 = 31/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70-1/15 15/70-2/15 15/70-1/30 45/70-1/15 15/70-3/15 15/70-1/45 75/70-1/15 15/70-5/15 15/70-1/75 15/70-7/15