Subtract 10/27 from 28/42
28/42 - 10/27 is 8/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
28/42 = 28 × 9/42 × 9 = 252/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
10/27 = 10 × 14/27 × 14 = 140/378 - Subtract the two like fractions:
252/378 - 140/378 = 252 - 140/378 = 112/378 - After reducing the fraction, the answer is 8/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42-10/27 28/42-20/27 28/84-10/27 28/42-10/54 84/42-10/27 28/42-30/27 28/42-10/81 28/42-50/27 28/42-70/27