Answers

Subtract 49/16 from 5/21

1^st number: 5/21, 2^nd number: 3 1/16

5/21 - 49/16 is -949/336.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 16 is 336
   
   Next, find the equivalent fraction of both fractional numbers with denominator 336
2. For the 1st fraction, since 21 × 16 = 336,
   5/21 = 5 × 16/21 × 16 = 80/336
3. Likewise, for the 2nd fraction, since 16 × 21 = 336,
   49/16 = 49 × 21/16 × 21 = 1029/336
4. Subtract the two like fractions:
   80/336 - 1029/336 = 80 - 1029/336 = -949/336

MathStep (Works offline)

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

Related: ¹⁰/₂₁-⁴⁹/₁₆ ⁵/₂₁-⁹⁸/₁₆ ⁵/₄₂-⁴⁹/₁₆ ⁵/₂₁-⁴⁹/₃₂ ¹⁵/₂₁-⁴⁹/₁₆ ⁵/₆₃-⁴⁹/₁₆ ⁵/₂₁-⁴⁹/₄₈ ²⁵/₂₁-⁴⁹/₁₆ ⁵/₂₁-⁴⁹/₈₀ ³⁵/₂₁-⁴⁹/₁₆

Subtract Fractions Calculator