Subtract 35/15 from 7/28
1st number: 7/28, 2nd number: 2 5/15
7/28 - 35/15 is -25/12.
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,
7/28 = 7 × 15/28 × 15 = 105/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
35/15 = 35 × 28/15 × 28 = 980/420 - Subtract the two like fractions:
105/420 - 980/420 = 105 - 980/420 = -875/420 - After reducing the fraction, the answer is -25/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28-35/15 7/28-70/15 7/56-35/15 7/28-35/30 21/28-35/15 7/84-35/15 7/28-35/45 35/28-35/15 7/28-35/75 49/28-35/15