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Add 70/12 and 9/90

1st number: 5 10/12, 2nd number: 9/90

70/12 + 9/90 is 89/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 90 is 180
  2. For the 1st fraction, since 12 × 15 = 180,
    70/12 = 70 × 15/12 × 15 = 1050/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    9/90 = 9 × 2/90 × 2 = 18/180
  4. Add the two fractions:
    1050/180 + 18/180 = 1050 + 18/180 = 1068/180
  5. 1068/180 simplified gives 89/15
  6. So, 70/12 + 9/90 = 89/15
    In mixed form: 514/15

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