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Add 42/20 and 18/12

1st number: 2 2/20, 2nd number: 1 6/12

42/20 + 18/12 is 18/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 12 is 60
  2. For the 1st fraction, since 20 × 3 = 60,
    42/20 = 42 × 3/20 × 3 = 126/60
  3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
    18/12 = 18 × 5/12 × 5 = 90/60
  4. Add the two fractions:
    126/60 + 90/60 = 126 + 90/60 = 216/60
  5. 216/60 simplified gives 18/5
  6. So, 42/20 + 18/12 = 18/5
    In mixed form: 33/5

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