Subtract 42/24 from 50/21
1st number: 2 8/21, 2nd number: 1 18/24
50/21 - 42/24 is 53/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
50/21 = 50 × 8/21 × 8 = 400/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
42/24 = 42 × 7/24 × 7 = 294/168 - Subtract the two like fractions:
400/168 - 294/168 = 400 - 294/168 = 106/168 - After reducing the fraction, the answer is 53/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21-84/24 50/42-42/24 50/21-42/48 50/63-42/24 50/21-42/72