Subtract 4/42 from 6/8
6/8 - 4/42 is 55/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
6/8 = 6 × 21/8 × 21 = 126/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
4/42 = 4 × 4/42 × 4 = 16/168 - Subtract the two like fractions:
126/168 - 16/168 = 126 - 16/168 = 110/168 - After reducing the fraction, the answer is 55/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/8-4/42 6/8-8/42 6/16-4/42 6/8-4/84 18/8-4/42 6/8-12/42 6/24-4/42 30/8-4/42 6/8-20/42 6/40-4/42 42/8-4/42 6/8-28/42 6/56-4/42