Subtract 15/30 from 42/25
1st number: 1 17/25, 2nd number: 15/30
42/25 - 15/30 is 59/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 30 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 25 × 6 = 150,
42/25 = 42 × 6/25 × 6 = 252/150 - Likewise, for the 2nd fraction, since 30 × 5 = 150,
15/30 = 15 × 5/30 × 5 = 75/150 - Subtract the two like fractions:
252/150 - 75/150 = 252 - 75/150 = 177/150 - After reducing the fraction, the answer is 59/50
- In mixed form: 19/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/25-15/30 42/50-15/30 42/25-15/60 42/25-45/30 42/75-15/30 42/25-15/90 42/25-75/30