Subtract 2/18 from 42/9
1st number: 4 6/9, 2nd number: 2/18
42/9 - 2/18 is 41/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 9 × 2 = 18,
42/9 = 42 × 2/9 × 2 = 84/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
2/18 = 2 × 1/18 × 1 = 2/18 - Subtract the two like fractions:
84/18 - 2/18 = 84 - 2/18 = 82/18 - After reducing the fraction, the answer is 41/9
- In mixed form: 45/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9-2/18 42/9-4/18 42/18-2/18 42/9-2/36 42/9-6/18 42/27-2/18 42/9-2/54 42/9-10/18 42/45-2/18 42/9-2/90 42/9-14/18 42/63-2/18