Subtract 6/42 from 42/18
1st number: 2 6/18, 2nd number: 6/42
42/18 - 6/42 is 46/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
42/18 = 42 × 7/18 × 7 = 294/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
6/42 = 6 × 3/42 × 3 = 18/126 - Subtract the two like fractions:
294/126 - 18/126 = 294 - 18/126 = 276/126 - After reducing the fraction, the answer is 46/21
- In mixed form: 24/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18-6/42 42/18-12/42 42/36-6/42 42/18-6/84 42/18-18/42 42/54-6/42 42/18-30/42 42/90-6/42