Subtract 18/27 from 42/25
1st number: 1 17/25, 2nd number: 18/27
42/25 - 18/27 is 76/75.
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,
42/25 = 42 × 27/25 × 27 = 1134/675 - Likewise, for the 2nd fraction, since 27 × 25 = 675,
18/27 = 18 × 25/27 × 25 = 450/675 - Subtract the two like fractions:
1134/675 - 450/675 = 1134 - 450/675 = 684/675 - After reducing the fraction, the answer is 76/75
- In mixed form: 11/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/25-18/27 42/25-36/27 42/50-18/27 42/25-18/54 42/25-54/27 42/75-18/27 42/25-18/81 42/25-90/27