Subtract 1/20 from 30/9
1st number: 3 3/9, 2nd number: 1/20
30/9 - 1/20 is 197/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
30/9 = 30 × 20/9 × 20 = 600/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
1/20 = 1 × 9/20 × 9 = 9/180 - Subtract the two like fractions:
600/180 - 9/180 = 600 - 9/180 = 591/180 - After reducing the fraction, the answer is 197/60
- In mixed form: 317/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/9-1/20 30/9-2/20 30/18-1/20 30/9-1/40 90/9-1/20 30/9-3/20 30/27-1/20 30/9-1/60 30/9-5/20 30/45-1/20 30/9-7/20 30/63-1/20