Subtract 6/9 from 4/42
4/42 - 6/9 is -4/7.
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,
4/42 = 4 × 3/42 × 3 = 12/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
6/9 = 6 × 14/9 × 14 = 84/126 - Subtract the two like fractions:
12/126 - 84/126 = 12 - 84/126 = -72/126 - After reducing the fraction, the answer is -4/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/42-6/9 4/42-12/9 4/84-6/9 4/42-6/18 12/42-6/9 4/42-18/9 4/42-6/27 20/42-6/9 4/42-30/9 4/42-6/45 28/42-6/9 4/42-42/9 4/42-6/63