Subtract 6/4 from 28/42
1st number: 28/42, 2nd number: 1 2/4
28/42 - 6/4 is -5/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
28/42 = 28 × 2/42 × 2 = 56/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
6/4 = 6 × 21/4 × 21 = 126/84 - Subtract the two like fractions:
56/84 - 126/84 = 56 - 126/84 = -70/84 - After reducing the fraction, the answer is -5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42-6/4 28/42-12/4 28/84-6/4 28/42-6/8 84/42-6/4 28/42-18/4 28/42-6/12 28/42-30/4 28/42-6/20 28/42-42/4 28/42-6/28