Subtract 7/18 from 12/49
12/49 - 7/18 is -127/882.
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,
12/49 = 12 × 18/49 × 18 = 216/882 - Likewise, for the 2nd fraction, since 18 × 49 = 882,
7/18 = 7 × 49/18 × 49 = 343/882 - Subtract the two like fractions:
216/882 - 343/882 = 216 - 343/882 = -127/882
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/49-7/18 12/49-14/18 12/98-7/18 12/49-7/36 36/49-7/18 12/49-21/18 12/49-7/54 60/49-7/18 12/49-35/18 12/49-7/90 84/49-7/18 12/49-49/18