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Add 90/12 and 70/8

1st number: 7 6/12, 2nd number: 8 6/8

90/12 + 70/8 is 65/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 8 is 24
  2. For the 1st fraction, since 12 × 2 = 24,
    90/12 = 90 × 2/12 × 2 = 180/24
  3. Likewise, for the 2nd fraction, since 8 × 3 = 24,
    70/8 = 70 × 3/8 × 3 = 210/24
  4. Add the two fractions:
    180/24 + 210/24 = 180 + 210/24 = 390/24
  5. 390/24 simplified gives 65/4
  6. So, 90/12 + 70/8 = 65/4
    In mixed form: 161/4

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