Subtract 3/10 from 20/54
20/54 - 3/10 is 19/270.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 10 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
20/54 = 20 × 5/54 × 5 = 100/270 - Likewise, for the 2nd fraction, since 10 × 27 = 270,
3/10 = 3 × 27/10 × 27 = 81/270 - Subtract the two like fractions:
100/270 - 81/270 = 100 - 81/270 = 19/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/54-3/10 20/54-6/10 20/54-3/20 60/54-3/10 20/54-9/10 20/54-3/30 20/54-15/10 20/54-3/50 20/54-21/10 20/54-3/70