Subtract 81/14 from 54/20
1st number: 2 14/20, 2nd number: 5 11/14
54/20 - 81/14 is -108/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 14 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
54/20 = 54 × 7/20 × 7 = 378/140 - Likewise, for the 2nd fraction, since 14 × 10 = 140,
81/14 = 81 × 10/14 × 10 = 810/140 - Subtract the two like fractions:
378/140 - 810/140 = 378 - 810/140 = -432/140 - After reducing the fraction, the answer is -108/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/40-81/14 54/20-81/28 54/60-81/14 54/20-81/42 54/20-81/70 54/20-81/98