Subtract 40/49 from 7/14
7/14 - 40/49 is -31/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 49 is 98
Next, find the equivalent fraction of both fractional numbers with denominator 98 - For the 1st fraction, since 14 × 7 = 98,
7/14 = 7 × 7/14 × 7 = 49/98 - Likewise, for the 2nd fraction, since 49 × 2 = 98,
40/49 = 40 × 2/49 × 2 = 80/98 - Subtract the two like fractions:
49/98 - 80/98 = 49 - 80/98 = -31/98
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 7/14-80/49 7/28-40/49 7/14-40/98 21/14-40/49 7/42-40/49 35/14-40/49 7/70-40/49 49/14-40/49 7/98-40/49