Subtract 42/15 from 4/27
1st number: 4/27, 2nd number: 2 12/15
4/27 - 42/15 is -358/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 15 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 27 × 5 = 135,
4/27 = 4 × 5/27 × 5 = 20/135 - Likewise, for the 2nd fraction, since 15 × 9 = 135,
42/15 = 42 × 9/15 × 9 = 378/135 - Subtract the two like fractions:
20/135 - 378/135 = 20 - 378/135 = -358/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/27-42/15 4/27-84/15 4/54-42/15 4/27-42/30 12/27-42/15 4/81-42/15 4/27-42/45 20/27-42/15 4/27-42/75 28/27-42/15