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Add 70/18 and 18/21

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

70/18 + 18/21 is 299/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 21 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 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 21 × 6 = 126,
    18/21 = 18 × 6/21 × 6 = 108/126
  4. Add the two like fractions:
    490/126 + 108/126 = 490 + 108/126 = 598/126
  5. 598/126 simplified gives 299/63
  6. So, 70/18 + 18/21 = 299/63
    In mixed form: 447/63

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