Subtract 10/42 from 15/25
15/25 - 10/42 is 38/105.
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,
15/25 = 15 × 42/25 × 42 = 630/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
10/42 = 10 × 25/42 × 25 = 250/1050 - Subtract the two like fractions:
630/1050 - 250/1050 = 630 - 250/1050 = 380/1050 - After reducing the fraction, the answer is 38/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/25-10/42 15/25-20/42 15/50-10/42 15/25-10/84 45/25-10/42 15/25-30/42 15/75-10/42 75/25-10/42 15/25-50/42 15/25-70/42