Subtract 48/8 from 28/42
1st number: 28/42, 2nd number: 6 0/8
28/42 - 48/8 is -16/3.
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,
28/42 = 28 × 4/42 × 4 = 112/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
48/8 = 48 × 21/8 × 21 = 1008/168 - Subtract the two like fractions:
112/168 - 1008/168 = 112 - 1008/168 = -896/168 - After reducing the fraction, the answer is -16/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42-48/8 28/42-96/8 28/84-48/8 28/42-48/16 84/42-48/8 28/42-48/24 28/42-48/40 28/42-48/56