Subtract 14/18 from 7/49
7/49 - 14/18 is -40/63.
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,
14/18 = 14 × 49/18 × 49 = 686/882 - Subtract the two like fractions:
126/882 - 686/882 = 126 - 686/882 = -560/882 - After reducing the fraction, the answer is -40/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/49-14/18 7/49-28/18 7/98-14/18 7/49-14/36 21/49-14/18 7/49-42/18 7/49-14/54 35/49-14/18 7/49-70/18 7/49-14/90 7/49-98/18