Subtract 30/20 from 1/9
1st number: 1/9, 2nd number: 1 10/20
1/9 - 30/20 is -25/18.
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,
1/9 = 1 × 20/9 × 20 = 20/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
30/20 = 30 × 9/20 × 9 = 270/180 - Subtract the two like fractions:
20/180 - 270/180 = 20 - 270/180 = -250/180 - After reducing the fraction, the answer is -25/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/9-30/20 1/9-60/20 1/18-30/20 1/9-30/40 3/9-30/20 1/9-90/20 1/27-30/20 1/9-30/60 5/9-30/20 1/45-30/20 7/9-30/20 1/63-30/20