Subtract 18/5 from 28/10
1st number: 2 8/10, 2nd number: 3 3/5
28/10 - 18/5 is -4/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 5 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 10 × 1 = 10,
28/10 = 28 × 1/10 × 1 = 28/10 - Likewise, for the 2nd fraction, since 5 × 2 = 10,
18/5 = 18 × 2/5 × 2 = 36/10 - Subtract the two like fractions:
28/10 - 36/10 = 28 - 36/10 = -8/10 - After reducing the fraction, the answer is -4/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/10-18/5 28/10-36/5 28/20-18/5 28/10-18/10 84/10-18/5 28/10-54/5 28/30-18/5 28/10-18/15 28/10-90/5 28/50-18/5 28/10-18/25 28/70-18/5 28/10-18/35