Subtract 9/15 from 16/28
16/28 - 9/15 is -1/35.
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,
16/28 = 16 × 15/28 × 15 = 240/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
9/15 = 9 × 28/15 × 28 = 252/420 - Subtract the two like fractions:
240/420 - 252/420 = 240 - 252/420 = -12/420 - After reducing the fraction, the answer is -1/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/28-9/15 16/28-18/15 16/56-9/15 16/28-9/30 48/28-9/15 16/28-27/15 16/84-9/15 16/28-9/45 80/28-9/15 16/28-45/15 16/28-9/75 16/28-63/15