Subtract 1/9 from 42/18
1st number: 2 6/18, 2nd number: 1/9
42/18 - 1/9 is 20/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 9 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 9 × 2 = 18,
1/9 = 1 × 2/9 × 2 = 2/18 - Subtract the two like fractions:
42/18 - 2/18 = 42 - 2/18 = 40/18 - After reducing the fraction, the answer is 20/9
- In mixed form: 22/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18-1/9 42/18-2/9 42/36-1/9 42/18-1/18 42/18-3/9 42/54-1/9 42/18-1/27 42/18-5/9 42/90-1/9 42/18-1/45 42/18-7/9 42/18-1/63