Subtract 27/36 from 20/50
20/50 - 27/36 is -7/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 36 is 900
Next, find the equivalent fraction of both fractional numbers with denominator 900 - For the 1st fraction, since 50 × 18 = 900,
20/50 = 20 × 18/50 × 18 = 360/900 - Likewise, for the 2nd fraction, since 36 × 25 = 900,
27/36 = 27 × 25/36 × 25 = 675/900 - Subtract the two like fractions:
360/900 - 675/900 = 360 - 675/900 = -315/900 - After reducing the fraction, the answer is -7/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/50-27/36 20/50-54/36 20/50-27/72 60/50-27/36 20/50-81/36