Subtract 20/54 from 1/2
1/2 - 20/54 is 7/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 2 × 27 = 54,
1/2 = 1 × 27/2 × 27 = 27/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
20/54 = 20 × 1/54 × 1 = 20/54 - Subtract the two like fractions:
27/54 - 20/54 = 27 - 20/54 = 7/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 1/2-40/54 1/4-20/54 3/2-20/54 1/2-60/54 1/6-20/54 5/2-20/54 1/10-20/54 7/2-20/54 1/14-20/54