Subtract 90/27 from 40/25
1st number: 1 15/25, 2nd number: 3 9/27
40/25 - 90/27 is -26/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 27 is 675
Next, find the equivalent fraction of both fractional numbers with denominator 675 - For the 1st fraction, since 25 × 27 = 675,
40/25 = 40 × 27/25 × 27 = 1080/675 - Likewise, for the 2nd fraction, since 27 × 25 = 675,
90/27 = 90 × 25/27 × 25 = 2250/675 - Subtract the two like fractions:
1080/675 - 2250/675 = 1080 - 2250/675 = -1170/675 - After reducing the fraction, the answer is -26/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/25-90/27 40/50-90/27 40/25-90/54 40/75-90/27 40/25-90/81