Subtract 2/15 from 42/30
1st number: 1 12/30, 2nd number: 2/15
42/30 - 2/15 is 19/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
42/30 = 42 × 1/30 × 1 = 42/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
2/15 = 2 × 2/15 × 2 = 4/30 - Subtract the two like fractions:
42/30 - 4/30 = 42 - 4/30 = 38/30 - After reducing the fraction, the answer is 19/15
- In mixed form: 14/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30-2/15 42/30-4/15 42/60-2/15 42/30-2/30 42/30-6/15 42/90-2/15 42/30-2/45 42/30-10/15 42/30-2/75 42/30-14/15