Subtract 54/20 from 36/7
1st number: 5 1/7, 2nd number: 2 14/20
36/7 - 54/20 is 171/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
36/7 = 36 × 20/7 × 20 = 720/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
54/20 = 54 × 7/20 × 7 = 378/140 - Subtract the two like fractions:
720/140 - 378/140 = 720 - 378/140 = 342/140 - After reducing the fraction, the answer is 171/70
- In mixed form: 231/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/7-54/20 36/14-54/20 36/7-54/40 36/21-54/20 36/7-54/60 36/35-54/20 36/49-54/20