Subtract 24/27 from 20/12
1st number: 1 8/12, 2nd number: 24/27
20/12 - 24/27 is 7/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 12 × 9 = 108,
20/12 = 20 × 9/12 × 9 = 180/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
24/27 = 24 × 4/27 × 4 = 96/108 - Subtract the two like fractions:
180/108 - 96/108 = 180 - 96/108 = 84/108 - After reducing the fraction, the answer is 7/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12-24/27 20/12-48/27 20/24-24/27 20/12-24/54 60/12-24/27 20/12-72/27 20/36-24/27 20/12-24/81 20/60-24/27 20/84-24/27