Subtract 25/50 from 42/15
1st number: 2 12/15, 2nd number: 25/50
42/15 - 25/50 is 23/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 50 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 15 × 10 = 150,
42/15 = 42 × 10/15 × 10 = 420/150 - Likewise, for the 2nd fraction, since 50 × 3 = 150,
25/50 = 25 × 3/50 × 3 = 75/150 - Subtract the two like fractions:
420/150 - 75/150 = 420 - 75/150 = 345/150 - After reducing the fraction, the answer is 23/10
- In mixed form: 23/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15-25/50 42/30-25/50 42/15-75/50 42/45-25/50 42/75-25/50