Subtract 5/18 from 40/20
1st number: 2 0/20, 2nd number: 5/18
40/20 - 5/18 is 31/18.
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,
40/20 = 40 × 9/20 × 9 = 360/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
5/18 = 5 × 10/18 × 10 = 50/180 - Subtract the two like fractions:
360/180 - 50/180 = 360 - 50/180 = 310/180 - After reducing the fraction, the answer is 31/18
- In mixed form: 113/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/20-5/18 40/20-10/18 40/20-5/36 40/20-15/18 40/60-5/18 40/20-5/54 40/20-25/18 40/20-5/90 40/20-35/18