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Add 42/20 and 18/72

1st number: 2 2/20, 2nd number: 18/72

42/20 + 18/72 is 47/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 20 × 18 = 360,
    42/20 = 42 × 18/20 × 18 = 756/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    18/72 = 18 × 5/72 × 5 = 90/360
  4. Add the two like fractions:
    756/360 + 90/360 = 756 + 90/360 = 846/360
  5. 846/360 simplified gives 47/20
  6. So, 42/20 + 18/72 = 47/20
    In mixed form: 27/20

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