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Add 80/90 and 70/84

80/90 + 70/84 is 31/18.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 90 × 14 = 1260,
    80/90 = 80 × 14/90 × 14 = 1120/1260
  3. Likewise, for the 2nd fraction, since 84 × 15 = 1260,
    70/84 = 70 × 15/84 × 15 = 1050/1260
  4. Add the two like fractions:
    1120/1260 + 1050/1260 = 1120 + 1050/1260 = 2170/1260
  5. 2170/1260 simplified gives 31/18
  6. So, 80/90 + 70/84 = 31/18
    In mixed form: 113/18

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