Subtract 20/50 from 18/3
1st number: 6 0/3, 2nd number: 20/50
18/3 - 20/50 is 28/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 50 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 3 × 50 = 150,
18/3 = 18 × 50/3 × 50 = 900/150 - Likewise, for the 2nd fraction, since 50 × 3 = 150,
20/50 = 20 × 3/50 × 3 = 60/150 - Subtract the two like fractions:
900/150 - 60/150 = 900 - 60/150 = 840/150 - After reducing the fraction, the answer is 28/5
- In mixed form: 53/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/3-20/50 18/3-40/50 18/6-20/50 54/3-20/50 18/3-60/50 18/9-20/50 90/3-20/50 18/15-20/50 18/21-20/50