Subtract 70/27 from 42/75
1st number: 42/75, 2nd number: 2 16/27
42/75 - 70/27 is -1372/675.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 27 is 675
Next, find the equivalent fraction of both fractional numbers with denominator 675 - For the 1st fraction, since 75 × 9 = 675,
42/75 = 42 × 9/75 × 9 = 378/675 - Likewise, for the 2nd fraction, since 27 × 25 = 675,
70/27 = 70 × 25/27 × 25 = 1750/675 - Subtract the two like fractions:
378/675 - 1750/675 = 378 - 1750/675 = -1372/675
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/75-70/27 42/75-70/54 42/75-70/81