Subtract 2/28 from 30/12
1st number: 2 6/12, 2nd number: 2/28
30/12 - 2/28 is 17/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
30/12 = 30 × 7/12 × 7 = 210/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
2/28 = 2 × 3/28 × 3 = 6/84 - Subtract the two like fractions:
210/84 - 6/84 = 210 - 6/84 = 204/84 - After reducing the fraction, the answer is 17/7
- In mixed form: 23/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12-2/28 30/12-4/28 30/24-2/28 30/12-2/56 90/12-2/28 30/12-6/28 30/36-2/28 30/12-2/84 30/12-10/28 30/60-2/28 30/12-14/28 30/84-2/28