Subtract 28/7 from 8/4
1st number: 2 0/4, 2nd number: 4 0/7
8/4 - 28/7 is -2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
8/4 = 8 × 7/4 × 7 = 56/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
28/7 = 28 × 4/7 × 4 = 112/28 - Subtract the two like fractions:
56/28 - 112/28 = 56 - 112/28 = -56/28 - After reducing the fraction, the answer is -2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/4-28/7 8/4-56/7 8/4-28/14 24/4-28/7 8/4-84/7 8/12-28/7 8/4-28/21 40/4-28/7 8/20-28/7 8/4-28/35 56/4-28/7 8/28-28/7 8/4-28/49