Subtract 15/84 from 28/15
1st number: 1 13/15, 2nd number: 15/84
28/15 - 15/84 is 709/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
28/15 = 28 × 28/15 × 28 = 784/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
15/84 = 15 × 5/84 × 5 = 75/420 - Subtract the two like fractions:
784/420 - 75/420 = 784 - 75/420 = 709/420 - In mixed form: 1289/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15-15/84 28/15-30/84 28/30-15/84 84/15-15/84 28/15-45/84 28/45-15/84 28/15-75/84 28/75-15/84