Subtract 25/18 from 30/12
1st number: 2 6/12, 2nd number: 1 7/18
30/12 - 25/18 is 10/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
30/12 = 30 × 3/12 × 3 = 90/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
25/18 = 25 × 2/18 × 2 = 50/36 - Subtract the two like fractions:
90/36 - 50/36 = 90 - 50/36 = 40/36 - After reducing the fraction, the answer is 10/9
- In mixed form: 11/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12-25/18 30/12-50/18 30/24-25/18 30/12-25/36 90/12-25/18 30/12-75/18 30/36-25/18 30/12-25/54 30/60-25/18 30/12-25/90 30/84-25/18