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Add 72/45 and 3/42

1st number: 1 27/45, 2nd number: 3/42

72/45 + 3/42 is 117/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 42 is 630
  2. For the 1st fraction, since 45 × 14 = 630,
    72/45 = 72 × 14/45 × 14 = 1008/630
  3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
    3/42 = 3 × 15/42 × 15 = 45/630
  4. Add the two fractions:
    1008/630 + 45/630 = 1008 + 45/630 = 1053/630
  5. After reducing the fraction, the answer is 117/70
  6. In mixed form: 147/70

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