Subtract 9/15 from 28/14
1st number: 2 0/14, 2nd number: 9/15
28/14 - 9/15 is 7/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 14 × 15 = 210,
28/14 = 28 × 15/14 × 15 = 420/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
9/15 = 9 × 14/15 × 14 = 126/210 - Subtract the two like fractions:
420/210 - 126/210 = 420 - 126/210 = 294/210 - After reducing the fraction, the answer is 7/5
- In mixed form: 12/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/14-9/15 28/14-18/15 28/14-9/30 84/14-9/15 28/14-27/15 28/42-9/15 28/14-9/45 28/14-45/15 28/70-9/15 28/14-9/75 28/14-63/15 28/98-9/15