Subtract 15/30 from 40/9
1st number: 4 4/9, 2nd number: 15/30
40/9 - 15/30 is 71/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
40/9 = 40 × 10/9 × 10 = 400/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
15/30 = 15 × 3/30 × 3 = 45/90 - Subtract the two like fractions:
400/90 - 45/90 = 400 - 45/90 = 355/90 - After reducing the fraction, the answer is 71/18
- In mixed form: 317/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/9-15/30 40/18-15/30 40/9-15/60 40/9-45/30 40/27-15/30 40/9-15/90 40/9-75/30 40/45-15/30 40/63-15/30