Answers

Subtract 56/12 from 8/42

1^st number: 8/42, 2^nd number: 4 8/12

8/42 - 56/12 is -94/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 12 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 42 × 2 = 84,
   8/42 = 8 × 2/42 × 2 = 16/84
3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
   56/12 = 56 × 7/12 × 7 = 392/84
4. Subtract the two like fractions:
   16/84 - 392/84 = 16 - 392/84 = -376/84
5. After reducing the fraction, the answer is -94/21

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ¹⁶/₄₂-⁵⁶/₁₂ ⁸/₈₄-⁵⁶/₁₂ ⁸/₄₂-⁵⁶/₂₄ ²⁴/₄₂-⁵⁶/₁₂ ⁸/₄₂-⁵⁶/₃₆ ⁴⁰/₄₂-⁵⁶/₁₂ ⁸/₄₂-⁵⁶/₆₀ ⁵⁶/₄₂-⁵⁶/₁₂ ⁸/₄₂-⁵⁶/₈₄

Subtract Fractions Calculator