Subtract 75/8 from 28/84
1st number: 28/84, 2nd number: 9 3/8
28/84 - 75/8 is -217/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
28/84 = 28 × 2/84 × 2 = 56/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
75/8 = 75 × 21/8 × 21 = 1575/168 - Subtract the two like fractions:
56/168 - 1575/168 = 56 - 1575/168 = -1519/168 - After reducing the fraction, the answer is -217/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/84-75/8 28/84-75/16 28/84-75/24 28/84-75/40 28/84-75/56