Subtract 2/20 from 63/18
1st number: 3 9/18, 2nd number: 2/20
63/18 - 2/20 is 17/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
63/18 = 63 × 10/18 × 10 = 630/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
2/20 = 2 × 9/20 × 9 = 18/180 - Subtract the two like fractions:
630/180 - 18/180 = 630 - 18/180 = 612/180 - After reducing the fraction, the answer is 17/5
- In mixed form: 32/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/18-4/20 63/36-2/20 63/18-2/40 63/18-6/20 63/54-2/20 63/18-2/60 63/18-10/20 63/90-2/20 63/18-14/20