Subtract 72/20 from 63/3
1st number: 21 0/3, 2nd number: 3 12/20
63/3 - 72/20 is 87/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 3 × 20 = 60,
63/3 = 63 × 20/3 × 20 = 1260/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
72/20 = 72 × 3/20 × 3 = 216/60 - Subtract the two like fractions:
1260/60 - 216/60 = 1260 - 216/60 = 1044/60 - After reducing the fraction, the answer is 87/5
- In mixed form: 172/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/6-72/20 63/3-72/40 63/9-72/20 63/3-72/60 63/15-72/20 63/21-72/20