Subtract 42/15 from 42/10
1st number: 4 2/10, 2nd number: 2 12/15
42/10 - 42/15 is 7/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
42/10 = 42 × 3/10 × 3 = 126/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
42/15 = 42 × 2/15 × 2 = 84/30 - Subtract the two like fractions:
126/30 - 84/30 = 126 - 84/30 = 42/30 - After reducing the fraction, the answer is 7/5
- In mixed form: 12/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/10-42/15 42/10-84/15 42/20-42/15 42/10-42/30 42/30-42/15 42/10-42/45 42/50-42/15 42/10-42/75 42/70-42/15