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Add 8/84 and 30/90

8/84 + 30/90 is 3/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 90 is 1260
  2. For the 1st fraction, since 84 × 15 = 1260,
    8/84 = 8 × 15/84 × 15 = 120/1260
  3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
    30/90 = 30 × 14/90 × 14 = 420/1260
  4. Add the two fractions:
    120/1260 + 420/1260 = 120 + 420/1260 = 540/1260
  5. After reducing the fraction, the answer is 3/7

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