Subtract 36/15 from 15/28
1st number: 15/28, 2nd number: 2 6/15
15/28 - 36/15 is -261/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
15/28 = 15 × 15/28 × 15 = 225/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
36/15 = 36 × 28/15 × 28 = 1008/420 - Subtract the two like fractions:
225/420 - 1008/420 = 225 - 1008/420 = -783/420 - After reducing the fraction, the answer is -261/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/28-36/15 15/28-72/15 15/56-36/15 15/28-36/30 45/28-36/15 15/84-36/15 15/28-36/45 75/28-36/15 15/28-36/75