Subtract 28/8 from 6/42
1st number: 6/42, 2nd number: 3 4/8
6/42 - 28/8 is -47/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
6/42 = 6 × 4/42 × 4 = 24/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
28/8 = 28 × 21/8 × 21 = 588/168 - Subtract the two like fractions:
24/168 - 588/168 = 24 - 588/168 = -564/168 - After reducing the fraction, the answer is -47/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/42-28/8 6/42-56/8 6/84-28/8 6/42-28/16 18/42-28/8 6/42-84/8 6/42-28/24 30/42-28/8 6/42-28/40 6/42-28/56