Subtract 28/5 from 42/4
1st number: 10 2/4, 2nd number: 5 3/5
42/4 - 28/5 is 49/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
42/4 = 42 × 5/4 × 5 = 210/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
28/5 = 28 × 4/5 × 4 = 112/20 - Subtract the two like fractions:
210/20 - 112/20 = 210 - 112/20 = 98/20 - After reducing the fraction, the answer is 49/10
- In mixed form: 49/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4-28/5 42/4-56/5 42/8-28/5 42/4-28/10 42/4-84/5 42/12-28/5 42/4-28/15 42/20-28/5 42/4-28/25 42/28-28/5 42/4-28/35