Subtract 42/50 from 21/24
21/24 - 42/50 is 7/200.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 50 is 600
Next, find the equivalent fraction of both fractional numbers with denominator 600 - For the 1st fraction, since 24 × 25 = 600,
21/24 = 21 × 25/24 × 25 = 525/600 - Likewise, for the 2nd fraction, since 50 × 12 = 600,
42/50 = 42 × 12/50 × 12 = 504/600 - Subtract the two like fractions:
525/600 - 504/600 = 525 - 504/600 = 21/600 - After reducing the fraction, the answer is 7/200
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24-42/50 21/24-84/50 21/48-42/50 63/24-42/50 21/72-42/50