Subtract 63/20 from 40/18
1st number: 2 4/18, 2nd number: 3 3/20
40/18 - 63/20 is -167/180.
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,
40/18 = 40 × 10/18 × 10 = 400/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
63/20 = 63 × 9/20 × 9 = 567/180 - Subtract the two like fractions:
400/180 - 567/180 = 400 - 567/180 = -167/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18-63/20 40/36-63/20 40/18-63/40 40/54-63/20 40/18-63/60 40/90-63/20