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Add 72/18 and 3/21

1st number: 4 0/18, 2nd number: 3/21

72/18 + 3/21 is 29/7.

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,
    72/18 = 72 × 7/18 × 7 = 504/126
  3. Likewise, for the 2nd fraction, since 21 × 6 = 126,
    3/21 = 3 × 6/21 × 6 = 18/126
  4. Add the two like fractions:
    504/126 + 18/126 = 504 + 18/126 = 522/126
  5. 522/126 simplified gives 29/7
  6. So, 72/18 + 3/21 = 29/7
    In mixed form: 41/7

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