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Add 15/63 and 3/20

15/63 + 3/20 is 163/420.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 63 × 20 = 1260,
    15/63 = 15 × 20/63 × 20 = 300/1260
  3. Likewise, for the 2nd fraction, since 20 × 63 = 1260,
    3/20 = 3 × 63/20 × 63 = 189/1260
  4. Add the two like fractions:
    300/1260 + 189/1260 = 300 + 189/1260 = 489/1260
  5. 489/1260 simplified gives 163/420
  6. So, 15/63 + 3/20 = 163/420

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