Subtract 56/5 from 15/42
1st number: 15/42, 2nd number: 11 1/5
15/42 - 56/5 is -759/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
15/42 = 15 × 5/42 × 5 = 75/210 - Likewise, for the 2nd fraction, since 5 × 42 = 210,
56/5 = 56 × 42/5 × 42 = 2352/210 - Subtract the two like fractions:
75/210 - 2352/210 = 75 - 2352/210 = -2277/210 - After reducing the fraction, the answer is -759/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42-56/5 15/84-56/5 15/42-56/10 45/42-56/5 15/42-56/15 75/42-56/5 15/42-56/25 15/42-56/35