Subtract 25/49 from 7/18
7/18 - 25/49 is -107/882.
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,
7/18 = 7 × 49/18 × 49 = 343/882 - Likewise, for the 2nd fraction, since 49 × 18 = 882,
25/49 = 25 × 18/49 × 18 = 450/882 - Subtract the two like fractions:
343/882 - 450/882 = 343 - 450/882 = -107/882
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/18-25/49 7/18-50/49 7/36-25/49 7/18-25/98 21/18-25/49 7/18-75/49 7/54-25/49 35/18-25/49 7/90-25/49 49/18-25/49