Subtract 30/12 from 40/9
1st number: 4 4/9, 2nd number: 2 6/12
40/9 - 30/12 is 35/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
40/9 = 40 × 4/9 × 4 = 160/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
30/12 = 30 × 3/12 × 3 = 90/36 - Subtract the two like fractions:
160/36 - 90/36 = 160 - 90/36 = 70/36 - After reducing the fraction, the answer is 35/18
- In mixed form: 117/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/9-30/12 40/9-60/12 40/18-30/12 40/9-30/24 40/9-90/12 40/27-30/12 40/9-30/36 40/45-30/12 40/9-30/60 40/63-30/12 40/9-30/84