Subtract 2/72 from 15/18
15/18 - 2/72 is 29/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
15/18 = 15 × 4/18 × 4 = 60/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
2/72 = 2 × 1/72 × 1 = 2/72 - Subtract the two like fractions:
60/72 - 2/72 = 60 - 2/72 = 58/72 - After reducing the fraction, the answer is 29/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18-2/72 15/18-4/72 15/36-2/72 45/18-2/72 15/18-6/72 15/54-2/72 75/18-2/72 15/18-10/72 15/90-2/72 15/18-14/72