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Add 20/24 and 18/63

20/24 + 18/63 is 47/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 24 and 63 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 24 × 21 = 504,
    20/24 = 20 × 21/24 × 21 = 420/504
  3. Likewise, for the 2nd fraction, since 63 × 8 = 504,
    18/63 = 18 × 8/63 × 8 = 144/504
  4. Add the two like fractions:
    420/504 + 144/504 = 420 + 144/504 = 564/504
  5. 564/504 simplified gives 47/42
  6. So, 20/24 + 18/63 = 47/42
    In mixed form: 15/42

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