Subtract 5/18 from 7/49
7/49 - 5/18 is -17/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 18 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 49 × 18 = 882,
7/49 = 7 × 18/49 × 18 = 126/882 - Likewise, for the 2nd fraction, since 18 × 49 = 882,
5/18 = 5 × 49/18 × 49 = 245/882 - Subtract the two like fractions:
126/882 - 245/882 = 126 - 245/882 = -119/882 - After reducing the fraction, the answer is -17/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/49-5/18 7/49-10/18 7/98-5/18 7/49-5/36 21/49-5/18 7/49-15/18 7/49-5/54 35/49-5/18 7/49-25/18 7/49-5/90 7/49-35/18