Subtract 15/20 from 90/6
1st number: 15 0/6, 2nd number: 15/20
90/6 - 15/20 is 57/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 6 × 10 = 60,
90/6 = 90 × 10/6 × 10 = 900/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
15/20 = 15 × 3/20 × 3 = 45/60 - Subtract the two like fractions:
900/60 - 45/60 = 900 - 45/60 = 855/60 - After reducing the fraction, the answer is 57/4
- In mixed form: 141/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/6-30/20 90/12-15/20 90/6-15/40 90/6-45/20 90/18-15/20 90/6-15/60 90/6-75/20 90/30-15/20 90/42-15/20