Subtract 28/56 from 1/15
1/15 - 28/56 is -13/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 15 × 56 = 840,
1/15 = 1 × 56/15 × 56 = 56/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
28/56 = 28 × 15/56 × 15 = 420/840 - Subtract the two like fractions:
56/840 - 420/840 = 56 - 420/840 = -364/840 - After reducing the fraction, the answer is -13/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/15-28/56 1/30-28/56 3/15-28/56 1/15-84/56 1/45-28/56 5/15-28/56 1/75-28/56 7/15-28/56