Subtract 42/15 from 42/6
1st number: 7 0/6, 2nd number: 2 12/15
42/6 - 42/15 is 21/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 6 × 5 = 30,
42/6 = 42 × 5/6 × 5 = 210/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
42/15 = 42 × 2/15 × 2 = 84/30 - Subtract the two like fractions:
210/30 - 84/30 = 210 - 84/30 = 126/30 - After reducing the fraction, the answer is 21/5
- In mixed form: 41/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/6-42/15 42/6-84/15 42/12-42/15 42/6-42/30 42/18-42/15 42/6-42/45 42/30-42/15 42/6-42/75