Subtract 28/18 from 30/5
1st number: 6 0/5, 2nd number: 1 10/18
30/5 - 28/18 is 40/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
30/5 = 30 × 18/5 × 18 = 540/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
28/18 = 28 × 5/18 × 5 = 140/90 - Subtract the two like fractions:
540/90 - 140/90 = 540 - 140/90 = 400/90 - After reducing the fraction, the answer is 40/9
- In mixed form: 44/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/5-28/18 30/5-56/18 30/10-28/18 30/5-28/36 90/5-28/18 30/5-84/18 30/15-28/18 30/5-28/54 30/25-28/18 30/5-28/90 30/35-28/18