Subtract 35/21 from 12/14
1st number: 12/14, 2nd number: 1 14/21
12/14 - 35/21 is -17/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
12/14 = 12 × 3/14 × 3 = 36/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
35/21 = 35 × 2/21 × 2 = 70/42 - Subtract the two like fractions:
36/42 - 70/42 = 36 - 70/42 = -34/42 - After reducing the fraction, the answer is -17/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/14-35/21 12/14-70/21 12/28-35/21 12/14-35/42 36/14-35/21 12/42-35/21 12/14-35/63 60/14-35/21 12/70-35/21 84/14-35/21 12/98-35/21