Subtract 28/3 from 7/42
1st number: 7/42, 2nd number: 9 1/3
7/42 - 28/3 is -55/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 3 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
7/42 = 7 × 1/42 × 1 = 7/42 - Likewise, for the 2nd fraction, since 3 × 14 = 42,
28/3 = 28 × 14/3 × 14 = 392/42 - Subtract the two like fractions:
7/42 - 392/42 = 7 - 392/42 = -385/42 - After reducing the fraction, the answer is -55/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42-28/3 7/42-56/3 7/84-28/3 7/42-28/6 21/42-28/3 7/42-84/3 7/42-28/9 35/42-28/3 7/42-28/15 49/42-28/3 7/42-28/21