Subtract 6/7 from 54/20
1st number: 2 14/20, 2nd number: 6/7
54/20 - 6/7 is 129/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 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 7 × 20 = 140,
6/7 = 6 × 20/7 × 20 = 120/140 - Subtract the two like fractions:
378/140 - 120/140 = 378 - 120/140 = 258/140 - After reducing the fraction, the answer is 129/70
- In mixed form: 159/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/20-12/7 54/40-6/7 54/20-6/14 54/20-18/7 54/60-6/7 54/20-6/21 54/20-30/7 54/20-6/35 54/20-42/7 54/20-6/49