Subtract 35/36 from 21/50
21/50 - 35/36 is -497/900.
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,
21/50 = 21 × 18/50 × 18 = 378/900 - Likewise, for the 2nd fraction, since 36 × 25 = 900,
35/36 = 35 × 25/36 × 25 = 875/900 - Subtract the two like fractions:
378/900 - 875/900 = 378 - 875/900 = -497/900
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50-35/36 21/50-70/36 21/50-35/72 63/50-35/36