Subtract 16/12 from 28/30
1st number: 28/30, 2nd number: 1 4/12
28/30 - 16/12 is -2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
28/30 = 28 × 2/30 × 2 = 56/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
16/12 = 16 × 5/12 × 5 = 80/60 - Subtract the two like fractions:
56/60 - 80/60 = 56 - 80/60 = -24/60 - After reducing the fraction, the answer is -2/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30-16/12 28/30-32/12 28/60-16/12 28/30-16/24 84/30-16/12 28/30-48/12 28/90-16/12 28/30-16/36 28/30-80/12 28/30-16/60 28/30-16/84