Subtract 84/15 from 3/28
1st number: 3/28, 2nd number: 5 9/15
3/28 - 84/15 is -769/140.
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,
3/28 = 3 × 15/28 × 15 = 45/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
84/15 = 84 × 28/15 × 28 = 2352/420 - Subtract the two like fractions:
45/420 - 2352/420 = 45 - 2352/420 = -2307/420 - After reducing the fraction, the answer is -769/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/28-84/15 3/56-84/15 3/28-84/30 9/28-84/15 3/84-84/15 3/28-84/45 15/28-84/15 3/28-84/75 21/28-84/15