Subtract 15/70 from 18/15
1st number: 1 3/15, 2nd number: 15/70
18/15 - 15/70 is 69/70.
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,
18/15 = 18 × 14/15 × 14 = 252/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
15/70 = 15 × 3/70 × 3 = 45/210 - Subtract the two like fractions:
252/210 - 45/210 = 252 - 45/210 = 207/210 - After reducing the fraction, the answer is 69/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15-15/70 18/15-30/70 18/30-15/70 54/15-15/70 18/15-45/70 18/45-15/70 90/15-15/70 18/15-75/70 18/75-15/70