Subtract 7/12 from 30/18
1st number: 1 12/18, 2nd number: 7/12
30/18 - 7/12 is 13/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
30/18 = 30 × 2/18 × 2 = 60/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
7/12 = 7 × 3/12 × 3 = 21/36 - Subtract the two like fractions:
60/36 - 21/36 = 60 - 21/36 = 39/36 - After reducing the fraction, the answer is 13/12
- In mixed form: 11/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18-7/12 30/18-14/12 30/36-7/12 30/18-7/24 90/18-7/12 30/18-21/12 30/54-7/12 30/18-7/36 30/18-35/12 30/90-7/12 30/18-7/60 30/18-49/12 30/18-7/84