Subtract 25/18 from 30/27
1st number: 1 3/27, 2nd number: 1 7/18
30/27 - 25/18 is -5/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 18 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 27 × 2 = 54,
30/27 = 30 × 2/27 × 2 = 60/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
25/18 = 25 × 3/18 × 3 = 75/54 - Subtract the two like fractions:
60/54 - 75/54 = 60 - 75/54 = -15/54 - After reducing the fraction, the answer is -5/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/27-25/18 30/27-50/18 30/54-25/18 30/27-25/36 90/27-25/18 30/27-75/18 30/81-25/18 30/27-25/54 30/27-25/90