Subtract 12/20 from 6/27
6/27 - 12/20 is -17/45.
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,
6/27 = 6 × 20/27 × 20 = 120/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
12/20 = 12 × 27/20 × 27 = 324/540 - Subtract the two like fractions:
120/540 - 324/540 = 120 - 324/540 = -204/540 - After reducing the fraction, the answer is -17/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/27-12/20 6/27-24/20 6/54-12/20 6/27-12/40 18/27-12/20 6/27-36/20 6/81-12/20 6/27-12/60 30/27-12/20 6/27-60/20 42/27-12/20 6/27-84/20