Subtract 54/8 from 27/10
1st number: 2 7/10, 2nd number: 6 6/8
27/10 - 54/8 is -81/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
27/10 = 27 × 4/10 × 4 = 108/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
54/8 = 54 × 5/8 × 5 = 270/40 - Subtract the two like fractions:
108/40 - 270/40 = 108 - 270/40 = -162/40 - After reducing the fraction, the answer is -81/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/10-54/8 27/20-54/8 27/10-54/16 81/10-54/8 27/30-54/8 27/10-54/24 27/50-54/8 27/10-54/40 27/70-54/8 27/10-54/56