Subtract 15/72 from 45/9
1st number: 5 0/9, 2nd number: 15/72
45/9 - 15/72 is 115/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
45/9 = 45 × 8/9 × 8 = 360/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
15/72 = 15 × 1/72 × 1 = 15/72 - Subtract the two like fractions:
360/72 - 15/72 = 360 - 15/72 = 345/72 - After reducing the fraction, the answer is 115/24
- In mixed form: 419/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/9-15/72 45/9-30/72 45/18-15/72 45/9-45/72 45/27-15/72 45/9-75/72 45/63-15/72