Subtract 3/25 from 42/30
1st number: 1 12/30, 2nd number: 3/25
42/30 - 3/25 is 32/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 25 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 30 × 5 = 150,
42/30 = 42 × 5/30 × 5 = 210/150 - Likewise, for the 2nd fraction, since 25 × 6 = 150,
3/25 = 3 × 6/25 × 6 = 18/150 - Subtract the two like fractions:
210/150 - 18/150 = 210 - 18/150 = 192/150 - After reducing the fraction, the answer is 32/25
- In mixed form: 17/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30-3/25 42/30-6/25 42/60-3/25 42/30-3/50 42/30-9/25 42/90-3/25 42/30-3/75 42/30-15/25 42/30-21/25