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Add 18/60 and 42/90

18/60 + 42/90 is 23/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 90 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 60 × 3 = 180,
    18/60 = 18 × 3/60 × 3 = 54/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    42/90 = 42 × 2/90 × 2 = 84/180
  4. Add the two like fractions:
    54/180 + 84/180 = 54 + 84/180 = 138/180
  5. 138/180 simplified gives 23/30
  6. So, 18/60 + 42/90 = 23/30

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