Subtract 8/42 from 1/56
1/56 - 8/42 is -29/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
1/56 = 1 × 3/56 × 3 = 3/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
8/42 = 8 × 4/42 × 4 = 32/168 - Subtract the two like fractions:
3/168 - 32/168 = 3 - 32/168 = -29/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/56-8/42 1/56-16/42 1/56-8/84 3/56-8/42 1/56-24/42 5/56-8/42 1/56-40/42 7/56-8/42 1/56-56/42