Subtract 30/40 from 20/9
1st number: 2 2/9, 2nd number: 30/40
20/9 - 30/40 is 53/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 9 × 40 = 360,
20/9 = 20 × 40/9 × 40 = 800/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
30/40 = 30 × 9/40 × 9 = 270/360 - Subtract the two like fractions:
800/360 - 270/360 = 800 - 270/360 = 530/360 - After reducing the fraction, the answer is 53/36
- In mixed form: 117/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/9-30/40 20/9-60/40 20/18-30/40 20/9-30/80 60/9-30/40 20/9-90/40 20/27-30/40 20/45-30/40 20/63-30/40