Subtract 20/50 from 45/15
1st number: 3 0/15, 2nd number: 20/50
45/15 - 20/50 is 13/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 50 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 15 × 10 = 150,
45/15 = 45 × 10/15 × 10 = 450/150 - Likewise, for the 2nd fraction, since 50 × 3 = 150,
20/50 = 20 × 3/50 × 3 = 60/150 - Subtract the two like fractions:
450/150 - 60/150 = 450 - 60/150 = 390/150 - After reducing the fraction, the answer is 13/5
- In mixed form: 23/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15-20/50 45/15-40/50 45/30-20/50 45/15-60/50 45/75-20/50