Subtract 14/12 from 30/28
1st number: 1 2/28, 2nd number: 1 2/12
30/28 - 14/12 is -2/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
30/28 = 30 × 3/28 × 3 = 90/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
14/12 = 14 × 7/12 × 7 = 98/84 - Subtract the two like fractions:
90/84 - 98/84 = 90 - 98/84 = -8/84 - After reducing the fraction, the answer is -2/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/28-14/12 30/28-28/12 30/56-14/12 30/28-14/24 90/28-14/12 30/28-42/12 30/84-14/12 30/28-14/36 30/28-70/12 30/28-14/60 30/28-98/12 30/28-14/84