Subtract 75/40 from 21/50
1st number: 21/50, 2nd number: 1 35/40
21/50 - 75/40 is -291/200.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 40 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 50 × 4 = 200,
21/50 = 21 × 4/50 × 4 = 84/200 - Likewise, for the 2nd fraction, since 40 × 5 = 200,
75/40 = 75 × 5/40 × 5 = 375/200 - Subtract the two like fractions:
84/200 - 375/200 = 84 - 375/200 = -291/200
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50-75/40 21/50-75/80 63/50-75/40