Subtract 1/9 from 27/42
27/42 - 1/9 is 67/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
27/42 = 27 × 3/42 × 3 = 81/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
1/9 = 1 × 14/9 × 14 = 14/126 - Subtract the two like fractions:
81/126 - 14/126 = 81 - 14/126 = 67/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42-1/9 27/42-2/9 27/84-1/9 27/42-1/18 81/42-1/9 27/42-3/9 27/42-1/27 27/42-5/9 27/42-1/45 27/42-7/9 27/42-1/63