Answers

Subtract 49/81 from 42/4

1^st number: 10 2/4, 2^nd number: 49/81

42/4 - 49/81 is 1603/162.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 81 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 4 × 81 = 324,
   42/4 = 42 × 81/4 × 81 = 3402/324
3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
   49/81 = 49 × 4/81 × 4 = 196/324
4. Subtract the two like fractions:
   3402/324 - 196/324 = 3402 - 196/324 = 3206/324
5. After reducing the fraction, the answer is 1603/162
6. In mixed form: 9145/162

MathStep (Works offline)

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

Related: ⁸⁴/₄-⁴⁹/₈₁ ⁴²/₄-⁹⁸/₈₁ ⁴²/₈-⁴⁹/₈₁ ⁴²/₁₂-⁴⁹/₈₁ ⁴²/₂₀-⁴⁹/₈₁ ⁴²/₂₈-⁴⁹/₈₁

Subtract Fractions Calculator