Subtract 15/50 from 20/36
20/36 - 15/50 is 23/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 50 is 900
Next, find the equivalent fraction of both fractional numbers with denominator 900 - For the 1st fraction, since 36 × 25 = 900,
20/36 = 20 × 25/36 × 25 = 500/900 - Likewise, for the 2nd fraction, since 50 × 18 = 900,
15/50 = 15 × 18/50 × 18 = 270/900 - Subtract the two like fractions:
500/900 - 270/900 = 500 - 270/900 = 230/900 - After reducing the fraction, the answer is 23/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/36-15/50 20/36-30/50 20/72-15/50 60/36-15/50 20/36-45/50 20/36-75/50