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Add 20/15 and 21/63

1st number: 1 5/15, 2nd number: 21/63

20/15 + 21/63 is 5/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 63 is 315
  2. For the 1st fraction, since 15 × 21 = 315,
    20/15 = 20 × 21/15 × 21 = 420/315
  3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
    21/63 = 21 × 5/63 × 5 = 105/315
  4. Add the two fractions:
    420/315 + 105/315 = 420 + 105/315 = 525/315
  5. After reducing the fraction, the answer is 5/3
  6. In mixed form: 12/3

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