Subtract 12/20 from 24/27
24/27 - 12/20 is 13/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
24/27 = 24 × 20/27 × 20 = 480/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
12/20 = 12 × 27/20 × 27 = 324/540 - Subtract the two like fractions:
480/540 - 324/540 = 480 - 324/540 = 156/540 - After reducing the fraction, the answer is 13/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/27-12/20 24/27-24/20 24/54-12/20 24/27-12/40 72/27-12/20 24/27-36/20 24/81-12/20 24/27-12/60 24/27-60/20 24/27-84/20