Subtract 28/42 from 30/14
1st number: 2 2/14, 2nd number: 28/42
30/14 - 28/42 is 31/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
30/14 = 30 × 3/14 × 3 = 90/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
28/42 = 28 × 1/42 × 1 = 28/42 - Subtract the two like fractions:
90/42 - 28/42 = 90 - 28/42 = 62/42 - After reducing the fraction, the answer is 31/21
- In mixed form: 110/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/14-28/42 30/14-56/42 30/28-28/42 30/14-28/84 90/14-28/42 30/14-84/42 30/42-28/42 30/70-28/42 30/98-28/42