Answers

Add 21/63 and 28/8

1^st number: 21/63, 2^nd number: 3 4/8

21/63 + 28/8 is 23/6.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 8 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 63 × 8 = 504,
   21/63 = 21 × 8/63 × 8 = 168/504
3. Likewise, for the 2nd fraction, since 8 × 63 = 504,
   28/8 = 28 × 63/8 × 63 = 1764/504
4. Add the two like fractions:
   168/504 + 1764/504 = 168 + 1764/504 = 1932/504
5. 1932/504 simplified gives 23/6
6. So, 21/63 + 28/8 = 23/6
   In mixed form: 35/6

MathStep (Works offline)

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

Related: ⁴²/₆₃+²⁸/₈ ²¹/₆₃+⁵⁶/₈ ²¹/₆₃+²⁸/₁₆ ²¹/₆₃+⁸⁴/₈ ²¹/₆₃+²⁸/₂₄ ²¹/₆₃+²⁸/₄₀ ²¹/₆₃+²⁸/₅₆

Add Fractions Calculator