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Add 70/18 and 21/63

1st number: 3 16/18, 2nd number: 21/63

70/18 + 21/63 is 38/9.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 63 is 126
  2. For the 1st fraction, since 18 × 7 = 126,
    70/18 = 70 × 7/18 × 7 = 490/126
  3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
    21/63 = 21 × 2/63 × 2 = 42/126
  4. Add the two fractions:
    490/126 + 42/126 = 490 + 42/126 = 532/126
  5. After reducing the fraction, the answer is 38/9
  6. In mixed form: 42/9

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