Answers

Add 64/21 and 3/42

1^st number: 3 1/21, 2^nd number: 3/42

64/21 + 3/42 is 131/42.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 42 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 21 × 2 = 42,
   64/21 = 64 × 2/21 × 2 = 128/42
3. Likewise, for the 2nd fraction, since 42 × 1 = 42,
   3/42 = 3 × 1/42 × 1 = 3/42
4. Add the two like fractions:
   128/42 + 3/42 = 128 + 3/42 = 131/42
5. So, 64/21 + 3/42 = 131/42
   In mixed form: 35/42

MathStep (Works offline)

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

Related: ⁶⁴/₂₁+⁶/₄₂ ⁶⁴/₄₂+³/₄₂ ⁶⁴/₂₁+³/₈₄ ⁶⁴/₂₁+⁹/₄₂ ⁶⁴/₆₃+³/₄₂ ⁶⁴/₂₁+¹⁵/₄₂ ⁶⁴/₂₁+²¹/₄₂

Add Fractions Calculator