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Add 18/28 and 18/30

18/28 + 18/30 is 87/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 30 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 28 × 15 = 420,
    18/28 = 18 × 15/28 × 15 = 270/420
  3. Likewise, for the 2nd fraction, since 30 × 14 = 420,
    18/30 = 18 × 14/30 × 14 = 252/420
  4. Add the two like fractions:
    270/420 + 252/420 = 270 + 252/420 = 522/420
  5. 522/420 simplified gives 87/70
  6. So, 18/28 + 18/30 = 87/70
    In mixed form: 117/70

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