Subtract 21/18 from 63/20
1st number: 3 3/20, 2nd number: 1 3/18
63/20 - 21/18 is 119/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
63/20 = 63 × 9/20 × 9 = 567/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
21/18 = 21 × 10/18 × 10 = 210/180 - Subtract the two like fractions:
567/180 - 210/180 = 567 - 210/180 = 357/180 - After reducing the fraction, the answer is 119/60
- In mixed form: 159/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/20-42/18 63/40-21/18 63/20-21/36 63/20-63/18 63/60-21/18 63/20-21/54 63/20-21/90