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Add 45/84 and 30/90

45/84 + 30/90 is 73/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 90 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 84 × 15 = 1260,
    45/84 = 45 × 15/84 × 15 = 675/1260
  3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
    30/90 = 30 × 14/90 × 14 = 420/1260
  4. Add the two like fractions:
    675/1260 + 420/1260 = 675 + 420/1260 = 1095/1260
  5. 1095/1260 simplified gives 73/84
  6. So, 45/84 + 30/90 = 73/84

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