Subtract 28/40 from 35/20
1st number: 1 15/20, 2nd number: 28/40
35/20 - 28/40 is 21/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
35/20 = 35 × 2/20 × 2 = 70/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
28/40 = 28 × 1/40 × 1 = 28/40 - Subtract the two like fractions:
70/40 - 28/40 = 70 - 28/40 = 42/40 - After reducing the fraction, the answer is 21/20
- In mixed form: 11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20-28/40 35/20-56/40 35/40-28/40 35/20-28/80 35/20-84/40 35/60-28/40