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Add 42/18 and 28/20

1st number: 2 6/18, 2nd number: 1 8/20

42/18 + 28/20 is 56/15.

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,
    28/20 = 28 × 9/20 × 9 = 252/180
  4. Add the two like fractions:
    420/180 + 252/180 = 420 + 252/180 = 672/180
  5. 672/180 simplified gives 56/15
  6. So, 42/18 + 28/20 = 56/15
    In mixed form: 311/15

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