Subtract 15/42 from 4/25
4/25 - 15/42 is -69/350.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 25 × 42 = 1050,
4/25 = 4 × 42/25 × 42 = 168/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
15/42 = 15 × 25/42 × 25 = 375/1050 - Subtract the two like fractions:
168/1050 - 375/1050 = 168 - 375/1050 = -207/1050 - After reducing the fraction, the answer is -69/350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/25-15/42 4/25-30/42 4/50-15/42 4/25-15/84 12/25-15/42 4/25-45/42 4/75-15/42 20/25-15/42 4/25-75/42 28/25-15/42