Subtract 10/5 from 28/40
1st number: 28/40, 2nd number: 2 0/5
28/40 - 10/5 is -13/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 5 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
28/40 = 28 × 1/40 × 1 = 28/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
10/5 = 10 × 8/5 × 8 = 80/40 - Subtract the two like fractions:
28/40 - 80/40 = 28 - 80/40 = -52/40 - After reducing the fraction, the answer is -13/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40-10/5 28/40-20/5 28/80-10/5 84/40-10/5 28/40-30/5 28/40-10/15 28/40-50/5 28/40-10/25 28/40-70/5 28/40-10/35