Subtract 1/3 from 42/18
1st number: 2 6/18, 2nd number: 1/3
42/18 - 1/3 is 2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 3 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
42/18 = 42 × 1/18 × 1 = 42/18 - Likewise, for the 2nd fraction, since 3 × 6 = 18,
1/3 = 1 × 6/3 × 6 = 6/18 - Subtract the two like fractions:
42/18 - 6/18 = 42 - 6/18 = 36/18 - After reducing the fraction, the answer is 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18-1/3 42/18-2/3 42/36-1/3 42/18-1/6 42/54-1/3 42/18-1/9 42/18-5/3 42/90-1/3 42/18-1/15 42/18-7/3 42/18-1/21