Subtract 10/12 from 20/27
20/27 - 10/12 is -5/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 12 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 27 × 4 = 108,
20/27 = 20 × 4/27 × 4 = 80/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
10/12 = 10 × 9/12 × 9 = 90/108 - Subtract the two like fractions:
80/108 - 90/108 = 80 - 90/108 = -10/108 - After reducing the fraction, the answer is -5/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/27-10/12 20/27-20/12 20/54-10/12 20/27-10/24 60/27-10/12 20/27-30/12 20/81-10/12 20/27-10/36 20/27-50/12 20/27-10/60 20/27-70/12 20/27-10/84