Subtract 30/20 from 72/14
1st number: 5 2/14, 2nd number: 1 10/20
72/14 - 30/20 is 51/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 14 × 10 = 140,
72/14 = 72 × 10/14 × 10 = 720/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
30/20 = 30 × 7/20 × 7 = 210/140 - Subtract the two like fractions:
720/140 - 210/140 = 720 - 210/140 = 510/140 - After reducing the fraction, the answer is 51/14
- In mixed form: 39/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/14-60/20 72/28-30/20 72/14-30/40 72/14-90/20 72/42-30/20 72/14-30/60 72/70-30/20 72/98-30/20