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Add 42/18 and 5/20

1st number: 2 6/18, 2nd number: 5/20

42/18 + 5/20 is 31/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 18 × 10 = 180,
    42/18 = 42 × 10/18 × 10 = 420/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    5/20 = 5 × 9/20 × 9 = 45/180
  4. Add the two like fractions:
    420/180 + 45/180 = 420 + 45/180 = 465/180
  5. 465/180 simplified gives 31/12
  6. So, 42/18 + 5/20 = 31/12
    In mixed form: 27/12

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