Subtract 1/30 from 28/12
1st number: 2 4/12, 2nd number: 1/30
28/12 - 1/30 is 23/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
28/12 = 28 × 5/12 × 5 = 140/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
1/30 = 1 × 2/30 × 2 = 2/60 - Subtract the two like fractions:
140/60 - 2/60 = 140 - 2/60 = 138/60 - After reducing the fraction, the answer is 23/10
- In mixed form: 23/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12-1/30 28/12-2/30 28/24-1/30 28/12-1/60 84/12-1/30 28/12-3/30 28/36-1/30 28/12-1/90 28/12-5/30 28/60-1/30 28/12-7/30 28/84-1/30