Subtract 60/27 from 30/18
1st number: 1 12/18, 2nd number: 2 6/27
30/18 - 60/27 is -5/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
30/18 = 30 × 3/18 × 3 = 90/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
60/27 = 60 × 2/27 × 2 = 120/54 - Subtract the two like fractions:
90/54 - 120/54 = 90 - 120/54 = -30/54 - After reducing the fraction, the answer is -5/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18-60/27 30/36-60/27 30/18-60/54 90/18-60/27 30/54-60/27 30/18-60/81 30/90-60/27