Subtract 56/49 from 15/18
1st number: 15/18, 2nd number: 1 7/49
15/18 - 56/49 is -13/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 49 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 18 × 49 = 882,
15/18 = 15 × 49/18 × 49 = 735/882 - Likewise, for the 2nd fraction, since 49 × 18 = 882,
56/49 = 56 × 18/49 × 18 = 1008/882 - Subtract the two like fractions:
735/882 - 1008/882 = 735 - 1008/882 = -273/882 - After reducing the fraction, the answer is -13/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18-56/49 15/36-56/49 15/18-56/98 45/18-56/49 15/54-56/49 75/18-56/49 15/90-56/49