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Add 18/30 and 18/90

18/30 + 18/90 is 4/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 90 is 90
  2. For the 1st fraction, since 30 × 3 = 90,
    18/30 = 18 × 3/30 × 3 = 54/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    18/90 = 18 × 1/90 × 1 = 18/90
  4. Add the two fractions:
    54/90 + 18/90 = 54 + 18/90 = 72/90
  5. After reducing the fraction, the answer is 4/5

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