Answers

Add 21/63 and 4/8

21/63 + 4/8 is 5/6.

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,
   4/8 = 4 × 63/8 × 63 = 252/504
4. Add the two like fractions:
   168/504 + 252/504 = 168 + 252/504 = 420/504
5. 420/504 simplified gives 5/6
6. So, 21/63 + 4/8 = 5/6

MathStep (Works offline)

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

Related: ⁴²/₆₃+⁴/₈ ²¹/₆₃+⁴/₁₆ ²¹/₆₃+¹²/₈ ²¹/₆₃+⁴/₂₄ ²¹/₆₃+²⁰/₈ ²¹/₆₃+⁴/₄₀ ²¹/₆₃+²⁸/₈ ²¹/₆₃+⁴/₅₆

Add Fractions Calculator