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Add 18/36 and 21/60

18/36 + 21/60 is 17/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 60 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 36 × 5 = 180,
    18/36 = 18 × 5/36 × 5 = 90/180
  3. Likewise, for the 2nd fraction, since 60 × 3 = 180,
    21/60 = 21 × 3/60 × 3 = 63/180
  4. Add the two like fractions:
    90/180 + 63/180 = 90 + 63/180 = 153/180
  5. 153/180 simplified gives 17/20
  6. So, 18/36 + 21/60 = 17/20

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