Subtract 35/14 from 30/21
1st number: 1 9/21, 2nd number: 2 7/14
30/21 - 35/14 is -15/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
30/21 = 30 × 2/21 × 2 = 60/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
35/14 = 35 × 3/14 × 3 = 105/42 - Subtract the two like fractions:
60/42 - 105/42 = 60 - 105/42 = -45/42 - After reducing the fraction, the answer is -15/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21-35/14 30/21-70/14 30/42-35/14 30/21-35/28 90/21-35/14 30/63-35/14 30/21-35/42 30/21-35/70 30/21-35/98