Subtract 21/50 from 35/72
35/72 - 21/50 is 119/1800.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 50 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 72 × 25 = 1800,
35/72 = 35 × 25/72 × 25 = 875/1800 - Likewise, for the 2nd fraction, since 50 × 36 = 1800,
21/50 = 21 × 36/50 × 36 = 756/1800 - Subtract the two like fractions:
875/1800 - 756/1800 = 875 - 756/1800 = 119/1800
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/72-21/50 35/72-42/50 35/72-63/50