Subtract 42/24 from 50/42
1st number: 1 8/42, 2nd number: 1 18/24
50/42 - 42/24 is -47/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
50/42 = 50 × 4/42 × 4 = 200/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
42/24 = 42 × 7/24 × 7 = 294/168 - Subtract the two like fractions:
200/168 - 294/168 = 200 - 294/168 = -94/168 - After reducing the fraction, the answer is -47/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42-84/24 50/84-42/24 50/42-42/48 50/42-42/72