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Add 9/20 and 15/63

9/20 + 15/63 is 289/420.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 63 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 20 × 63 = 1260,
    9/20 = 9 × 63/20 × 63 = 567/1260
  3. Likewise, for the 2nd fraction, since 63 × 20 = 1260,
    15/63 = 15 × 20/63 × 20 = 300/1260
  4. Add the two like fractions:
    567/1260 + 300/1260 = 567 + 300/1260 = 867/1260
  5. 867/1260 simplified gives 289/420
  6. So, 9/20 + 15/63 = 289/420

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