Subtract 80/28 from 3/15
1st number: 3/15, 2nd number: 2 24/28
3/15 - 80/28 is -93/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
3/15 = 3 × 28/15 × 28 = 84/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
80/28 = 80 × 15/28 × 15 = 1200/420 - Subtract the two like fractions:
84/420 - 1200/420 = 84 - 1200/420 = -1116/420 - After reducing the fraction, the answer is -93/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/15-80/28 3/30-80/28 3/15-80/56 9/15-80/28 3/45-80/28 3/15-80/84 3/75-80/28 21/15-80/28