Subtract 27/3 from 28/42
1st number: 28/42, 2nd number: 9 0/3
28/42 - 27/3 is -25/3.
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,
28/42 = 28 × 1/42 × 1 = 28/42 - Likewise, for the 2nd fraction, since 3 × 14 = 42,
27/3 = 27 × 14/3 × 14 = 378/42 - Subtract the two like fractions:
28/42 - 378/42 = 28 - 378/42 = -350/42 - After reducing the fraction, the answer is -25/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42-27/3 28/42-54/3 28/84-27/3 28/42-27/6 84/42-27/3 28/42-81/3 28/42-27/9 28/42-27/15 28/42-27/21