Subtract 1/3 from 30/18
1st number: 1 12/18, 2nd number: 1/3
30/18 - 1/3 is 4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 3 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
30/18 = 30 × 1/18 × 1 = 30/18 - Likewise, for the 2nd fraction, since 3 × 6 = 18,
1/3 = 1 × 6/3 × 6 = 6/18 - Subtract the two like fractions:
30/18 - 6/18 = 30 - 6/18 = 24/18 - After reducing the fraction, the answer is 4/3
- In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18-1/3 30/18-2/3 30/36-1/3 30/18-1/6 90/18-1/3 30/54-1/3 30/18-1/9 30/18-5/3 30/90-1/3 30/18-1/15 30/18-7/3 30/18-1/21