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Add 1/84 and 18/90

1/84 + 18/90 is 89/420.

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,
    1/84 = 1 × 15/84 × 15 = 15/1260
  3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
    18/90 = 18 × 14/90 × 14 = 252/1260
  4. Add the two like fractions:
    15/1260 + 252/1260 = 15 + 252/1260 = 267/1260
  5. 267/1260 simplified gives 89/420
  6. So, 1/84 + 18/90 = 89/420

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