Subtract 98/15 from 12/28
1st number: 12/28, 2nd number: 6 8/15
12/28 - 98/15 is -641/105.
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,
12/28 = 12 × 15/28 × 15 = 180/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
98/15 = 98 × 28/15 × 28 = 2744/420 - Subtract the two like fractions:
180/420 - 2744/420 = 180 - 2744/420 = -2564/420 - After reducing the fraction, the answer is -641/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28-98/15 12/56-98/15 12/28-98/30 36/28-98/15 12/84-98/15 12/28-98/45 60/28-98/15 12/28-98/75 84/28-98/15