Subtract 2/10 from 28/40
28/40 - 2/10 is 1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 10 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 10 × 4 = 40,
2/10 = 2 × 4/10 × 4 = 8/40 - Subtract the two like fractions:
28/40 - 8/40 = 28 - 8/40 = 20/40 - After reducing the fraction, the answer is 1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40-2/10 28/40-4/10 28/80-2/10 28/40-2/20 84/40-2/10 28/40-6/10 28/40-2/30 28/40-2/50 28/40-14/10 28/40-2/70