Subtract 2/18 from 6/42
6/42 - 2/18 is 2/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
6/42 = 6 × 3/42 × 3 = 18/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
2/18 = 2 × 7/18 × 7 = 14/126 - Subtract the two like fractions:
18/126 - 14/126 = 18 - 14/126 = 4/126 - After reducing the fraction, the answer is 2/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/42-2/18 6/42-4/18 6/84-2/18 6/42-2/36 18/42-2/18 6/42-6/18 6/42-2/54 30/42-2/18 6/42-10/18 6/42-2/90 6/42-14/18