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Add 9/45 and 18/90

9/45 + 18/90 is 2/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 90 is 90
  2. For the 1st fraction, since 45 × 2 = 90,
    9/45 = 9 × 2/45 × 2 = 18/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    18/90 = 18 × 1/90 × 1 = 18/90
  4. Add the two fractions:
    18/90 + 18/90 = 18 + 18/90 = 36/90
  5. After reducing the fraction, the answer is 2/5

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