Subtract 42/75 from 15/42
15/42 - 42/75 is -71/350.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 75 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
15/42 = 15 × 25/42 × 25 = 375/1050 - Likewise, for the 2nd fraction, since 75 × 14 = 1050,
42/75 = 42 × 14/75 × 14 = 588/1050 - Subtract the two like fractions:
375/1050 - 588/1050 = 375 - 588/1050 = -213/1050 - After reducing the fraction, the answer is -71/350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42-42/75 15/42-84/75 15/84-42/75 45/42-42/75 75/42-42/75