Subtract 28/10 from 18/4
1st number: 4 2/4, 2nd number: 2 8/10
18/4 - 28/10 is 17/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
18/4 = 18 × 5/4 × 5 = 90/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
28/10 = 28 × 2/10 × 2 = 56/20 - Subtract the two like fractions:
90/20 - 56/20 = 90 - 56/20 = 34/20 - After reducing the fraction, the answer is 17/10
- In mixed form: 17/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/4-28/10 18/4-56/10 18/8-28/10 18/4-28/20 54/4-28/10 18/4-84/10 18/12-28/10 18/4-28/30 90/4-28/10 18/20-28/10 18/4-28/50 18/28-28/10 18/4-28/70