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Add 21/15 and 70/63

1st number: 1 6/15, 2nd number: 1 7/63

21/15 + 70/63 is 113/45.

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,
    21/15 = 21 × 21/15 × 21 = 441/315
  3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
    70/63 = 70 × 5/63 × 5 = 350/315
  4. Add the two fractions:
    441/315 + 350/315 = 441 + 350/315 = 791/315
  5. After reducing the fraction, the answer is 113/45
  6. In mixed form: 223/45

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