Subtract 20/9 from 30/36
1st number: 30/36, 2nd number: 2 2/9
30/36 - 20/9 is -25/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 36 × 1 = 36,
30/36 = 30 × 1/36 × 1 = 30/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
20/9 = 20 × 4/9 × 4 = 80/36 - Subtract the two like fractions:
30/36 - 80/36 = 30 - 80/36 = -50/36 - 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: 60/36-20/9 30/36-40/9 30/72-20/9 30/36-20/18 90/36-20/9 30/36-60/9 30/36-20/27 30/36-20/45 30/36-20/63