Subtract 30/18 from 50/15
1st number: 3 5/15, 2nd number: 1 12/18
50/15 - 30/18 is 5/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
50/15 = 50 × 6/15 × 6 = 300/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
30/18 = 30 × 5/18 × 5 = 150/90 - Subtract the two like fractions:
300/90 - 150/90 = 300 - 150/90 = 150/90 - After reducing the fraction, the answer is 5/3
- In mixed form: 12/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/15-60/18 50/30-30/18 50/15-30/36 50/15-90/18 50/45-30/18 50/15-30/54 50/75-30/18 50/15-30/90