Subtract 2/5 from 8/28
8/28 - 2/5 is -4/35.
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,
8/28 = 8 × 5/28 × 5 = 40/140 - Likewise, for the 2nd fraction, since 5 × 28 = 140,
2/5 = 2 × 28/5 × 28 = 56/140 - Subtract the two like fractions:
40/140 - 56/140 = 40 - 56/140 = -16/140 - After reducing the fraction, the answer is -4/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/28-2/5 8/28-4/5 8/56-2/5 8/28-2/10 24/28-2/5 8/28-6/5 8/84-2/5 8/28-2/15 40/28-2/5 8/28-10/5 8/28-2/25 56/28-2/5 8/28-14/5 8/28-2/35