Subtract 20/72 from 15/3
1st number: 5 0/3, 2nd number: 20/72
15/3 - 20/72 is 85/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 3 × 24 = 72,
15/3 = 15 × 24/3 × 24 = 360/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
20/72 = 20 × 1/72 × 1 = 20/72 - Subtract the two like fractions:
360/72 - 20/72 = 360 - 20/72 = 340/72 - After reducing the fraction, the answer is 85/18
- In mixed form: 413/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/3-20/72 15/3-40/72 15/6-20/72 45/3-20/72 15/3-60/72 15/9-20/72 75/3-20/72 15/21-20/72