Subtract 20/90 from 30/6
1st number: 5 0/6, 2nd number: 20/90
30/6 - 20/90 is 43/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 6 × 15 = 90,
30/6 = 30 × 15/6 × 15 = 450/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
20/90 = 20 × 1/90 × 1 = 20/90 - Subtract the two like fractions:
450/90 - 20/90 = 450 - 20/90 = 430/90 - After reducing the fraction, the answer is 43/9
- In mixed form: 47/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/6-20/90 30/6-40/90 30/12-20/90 90/6-20/90 30/6-60/90 30/18-20/90 30/42-20/90