Subtract 20/72 from 4/6
4/6 - 20/72 is 7/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 6 × 12 = 72,
4/6 = 4 × 12/6 × 12 = 48/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
20/72 = 20 × 1/72 × 1 = 20/72 - Subtract the two like fractions:
48/72 - 20/72 = 48 - 20/72 = 28/72 - After reducing the fraction, the answer is 7/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/6-20/72 4/6-40/72 4/12-20/72 12/6-20/72 4/6-60/72 4/18-20/72 20/6-20/72 4/30-20/72 28/6-20/72 4/42-20/72