Subtract 4/42 from 42/15
1st number: 2 12/15, 2nd number: 4/42
42/15 - 4/42 is 284/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
42/15 = 42 × 14/15 × 14 = 588/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
4/42 = 4 × 5/42 × 5 = 20/210 - Subtract the two like fractions:
588/210 - 20/210 = 588 - 20/210 = 568/210 - After reducing the fraction, the answer is 284/105
- In mixed form: 274/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15-4/42 42/15-8/42 42/30-4/42 42/15-4/84 42/15-12/42 42/45-4/42 42/15-20/42 42/75-4/42 42/15-28/42