Subtract 8/5 from 12/28
1st number: 12/28, 2nd number: 1 3/5
12/28 - 8/5 is -41/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 5 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
12/28 = 12 × 5/28 × 5 = 60/140 - Likewise, for the 2nd fraction, since 5 × 28 = 140,
8/5 = 8 × 28/5 × 28 = 224/140 - Subtract the two like fractions:
60/140 - 224/140 = 60 - 224/140 = -164/140 - After reducing the fraction, the answer is -41/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28-8/5 12/28-16/5 12/56-8/5 12/28-8/10 36/28-8/5 12/28-24/5 12/84-8/5 12/28-8/15 60/28-8/5 12/28-40/5 12/28-8/25 84/28-8/5 12/28-56/5 12/28-8/35