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Add 3/20 and 12/63

3/20 + 12/63 is 143/420.

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,
    3/20 = 3 × 63/20 × 63 = 189/1260
  3. Likewise, for the 2nd fraction, since 63 × 20 = 1260,
    12/63 = 12 × 20/63 × 20 = 240/1260
  4. Add the two like fractions:
    189/1260 + 240/1260 = 189 + 240/1260 = 429/1260
  5. 429/1260 simplified gives 143/420
  6. So, 3/20 + 12/63 = 143/420

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