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Add 42/9 and 84/20

1st number: 4 6/9, 2nd number: 4 4/20

42/9 + 84/20 is 133/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 9 × 20 = 180,
    42/9 = 42 × 20/9 × 20 = 840/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    84/20 = 84 × 9/20 × 9 = 756/180
  4. Add the two like fractions:
    840/180 + 756/180 = 840 + 756/180 = 1596/180
  5. 1596/180 simplified gives 133/15
  6. So, 42/9 + 84/20 = 133/15
    In mixed form: 813/15

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