Subtract 42/27 from 20/14
1st number: 1 6/14, 2nd number: 1 15/27
20/14 - 42/27 is -8/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 27 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 14 × 27 = 378,
20/14 = 20 × 27/14 × 27 = 540/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
42/27 = 42 × 14/27 × 14 = 588/378 - Subtract the two like fractions:
540/378 - 588/378 = 540 - 588/378 = -48/378 - After reducing the fraction, the answer is -8/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/14-42/27 20/14-84/27 20/28-42/27 20/14-42/54 60/14-42/27 20/42-42/27 20/14-42/81 20/70-42/27 20/98-42/27