Subtract 8/27 from 18/20
18/20 - 8/27 is 163/270.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 27 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
18/20 = 18 × 27/20 × 27 = 486/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
8/27 = 8 × 20/27 × 20 = 160/540 - Subtract the two like fractions:
486/540 - 160/540 = 486 - 160/540 = 326/540 - After reducing the fraction, the answer is 163/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20-8/27 18/20-16/27 18/40-8/27 18/20-8/54 54/20-8/27 18/20-24/27 18/60-8/27 18/20-8/81 90/20-8/27 18/20-40/27 18/20-56/27