Subtract 21/35 from 7/14
7/14 - 21/35 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 35 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 14 × 5 = 70,
7/14 = 7 × 5/14 × 5 = 35/70 - Likewise, for the 2nd fraction, since 35 × 2 = 70,
21/35 = 21 × 2/35 × 2 = 42/70 - Subtract the two like fractions:
35/70 - 42/70 = 35 - 42/70 = -7/70 - After reducing the fraction, the answer is -1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 7/14-42/35 7/28-21/35 7/14-21/70 21/14-21/35 7/14-63/35 7/42-21/35 35/14-21/35 7/70-21/35 49/14-21/35 7/98-21/35