Subtract 20/24 from 56/42
1st number: 1 14/42, 2nd number: 20/24
56/42 - 20/24 is 1/2.
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,
56/42 = 56 × 4/42 × 4 = 224/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
20/24 = 20 × 7/24 × 7 = 140/168 - Subtract the two like fractions:
224/168 - 140/168 = 224 - 140/168 = 84/168 - After reducing the fraction, the answer is 1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42-40/24 56/84-20/24 56/42-20/48 56/42-60/24 56/42-20/72