Subtract 20/42 from 42/3
1st number: 14 0/3, 2nd number: 20/42
42/3 - 20/42 is 284/21.
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,
42/3 = 42 × 14/3 × 14 = 588/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
20/42 = 20 × 1/42 × 1 = 20/42 - Subtract the two like fractions:
588/42 - 20/42 = 588 - 20/42 = 568/42 - After reducing the fraction, the answer is 284/21
- In mixed form: 1311/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/3-20/42 42/3-40/42 42/6-20/42 42/3-20/84 42/3-60/42 42/9-20/42 42/15-20/42 42/21-20/42