Subtract 27/72 from 20/10
1st number: 2 0/10, 2nd number: 27/72
20/10 - 27/72 is 13/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 10 × 36 = 360,
20/10 = 20 × 36/10 × 36 = 720/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
27/72 = 27 × 5/72 × 5 = 135/360 - Subtract the two like fractions:
720/360 - 135/360 = 720 - 135/360 = 585/360 - After reducing the fraction, the answer is 13/8
- In mixed form: 15/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/10-27/72 20/10-54/72 60/10-27/72 20/10-81/72 20/30-27/72 20/50-27/72 20/70-27/72