Subtract 42/15 from 15/6
1st number: 2 3/6, 2nd number: 2 12/15
15/6 - 42/15 is -3/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 6 × 5 = 30,
15/6 = 15 × 5/6 × 5 = 75/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
42/15 = 42 × 2/15 × 2 = 84/30 - Subtract the two like fractions:
75/30 - 84/30 = 75 - 84/30 = -9/30 - After reducing the fraction, the answer is -3/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/6-42/15 15/6-84/15 15/12-42/15 15/6-42/30 45/6-42/15 15/18-42/15 15/6-42/45 75/6-42/15 15/30-42/15 15/6-42/75 15/42-42/15