Subtract 20/42 from 27/3
1st number: 9 0/3, 2nd number: 20/42
27/3 - 20/42 is 179/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 3 × 14 = 42,
27/3 = 27 × 14/3 × 14 = 378/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
20/42 = 20 × 1/42 × 1 = 20/42 - Subtract the two like fractions:
378/42 - 20/42 = 378 - 20/42 = 358/42 - After reducing the fraction, the answer is 179/21
- In mixed form: 811/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/3-20/42 27/3-40/42 27/6-20/42 27/3-20/84 81/3-20/42 27/3-60/42 27/9-20/42 27/15-20/42 27/21-20/42