Subtract 27/20 from 54/10
1st number: 5 4/10, 2nd number: 1 7/20
54/10 - 27/20 is 81/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
54/10 = 54 × 2/10 × 2 = 108/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
27/20 = 27 × 1/20 × 1 = 27/20 - Subtract the two like fractions:
108/20 - 27/20 = 108 - 27/20 = 81/20 - In mixed form: 41/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/10-54/20 54/20-27/20 54/10-27/40 54/10-81/20 54/30-27/20 54/10-27/60 54/50-27/20 54/70-27/20