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Add 18/28 and 30/90

18/28 + 30/90 is 41/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 90 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 28 × 45 = 1260,
    18/28 = 18 × 45/28 × 45 = 810/1260
  3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
    30/90 = 30 × 14/90 × 14 = 420/1260
  4. Add the two like fractions:
    810/1260 + 420/1260 = 810 + 420/1260 = 1230/1260
  5. 1230/1260 simplified gives 41/42
  6. So, 18/28 + 30/90 = 41/42

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