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Add 72/18 and 45/42

1st number: 4 0/18, 2nd number: 1 3/42

72/18 + 45/42 is 71/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 42 is 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 42 × 3 = 126,
    45/42 = 45 × 3/42 × 3 = 135/126
  4. Add the two fractions:
    504/126 + 135/126 = 504 + 135/126 = 639/126
  5. After reducing the fraction, the answer is 71/14
  6. In mixed form: 51/14

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