Subtract 60/18 from 30/27
1st number: 1 3/27, 2nd number: 3 6/18
30/27 - 60/18 is -20/9.
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,
60/18 = 60 × 3/18 × 3 = 180/54 - Subtract the two like fractions:
60/54 - 180/54 = 60 - 180/54 = -120/54 - After reducing the fraction, the answer is -20/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/27-60/18 30/54-60/18 30/27-60/36 90/27-60/18 30/81-60/18 30/27-60/54 30/27-60/90