Subtract 90/27 from 40/14
1st number: 2 12/14, 2nd number: 3 9/27
40/14 - 90/27 is -10/21.
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,
40/14 = 40 × 27/14 × 27 = 1080/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
90/27 = 90 × 14/27 × 14 = 1260/378 - Subtract the two like fractions:
1080/378 - 1260/378 = 1080 - 1260/378 = -180/378 - After reducing the fraction, the answer is -10/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/14-90/27 40/28-90/27 40/14-90/54 40/42-90/27 40/14-90/81 40/70-90/27 40/98-90/27