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Add 45/63 and 15/20

45/63 + 15/20 is 41/28.

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,
    45/63 = 45 × 20/63 × 20 = 900/1260
  3. Likewise, for the 2nd fraction, since 20 × 63 = 1260,
    15/20 = 15 × 63/20 × 63 = 945/1260
  4. Add the two like fractions:
    900/1260 + 945/1260 = 900 + 945/1260 = 1845/1260
  5. 1845/1260 simplified gives 41/28
  6. So, 45/63 + 15/20 = 41/28
    In mixed form: 113/28

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