Subtract 42/15 from 56/42
1st number: 1 14/42, 2nd number: 2 12/15
56/42 - 42/15 is -22/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
56/42 = 56 × 5/42 × 5 = 280/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
42/15 = 42 × 14/15 × 14 = 588/210 - Subtract the two like fractions:
280/210 - 588/210 = 280 - 588/210 = -308/210 - After reducing the fraction, the answer is -22/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42-84/15 56/84-42/15 56/42-42/30 56/42-42/45 56/42-42/75