Answers

Add 8/21 and 45/8

1^st number: 8/21, 2^nd number: 5 5/8

8/21 + 45/8 is 1009/168.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 8 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 21 × 8 = 168,
   8/21 = 8 × 8/21 × 8 = 64/168
3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
   45/8 = 45 × 21/8 × 21 = 945/168
4. Add the two like fractions:
   64/168 + 945/168 = 64 + 945/168 = 1009/168
5. So, 8/21 + 45/8 = 1009/168
   In mixed form: 61/168

MathStep (Works offline)

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

Related: ¹⁶/₂₁+⁴⁵/₈ ⁸/₂₁+⁹⁰/₈ ⁸/₄₂+⁴⁵/₈ ⁸/₂₁+⁴⁵/₁₆ ²⁴/₂₁+⁴⁵/₈ ⁸/₆₃+⁴⁵/₈ ⁸/₂₁+⁴⁵/₂₄ ⁴⁰/₂₁+⁴⁵/₈ ⁸/₂₁+⁴⁵/₄₀ ⁵⁶/₂₁+⁴⁵/₈ ⁸/₂₁+⁴⁵/₅₆

Add Fractions Calculator