Subtract 4/72 from 6/20
6/20 - 4/72 is 11/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
6/20 = 6 × 18/20 × 18 = 108/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
4/72 = 4 × 5/72 × 5 = 20/360 - Subtract the two like fractions:
108/360 - 20/360 = 108 - 20/360 = 88/360 - After reducing the fraction, the answer is 11/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/20-4/72 6/20-8/72 6/40-4/72 18/20-4/72 6/20-12/72 6/60-4/72 30/20-4/72 6/20-20/72 42/20-4/72 6/20-28/72