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Add 70/12 and 20/90

1st number: 5 10/12, 2nd number: 20/90

70/12 + 20/90 is 109/18.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 90 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 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,
    20/90 = 20 × 2/90 × 2 = 40/180
  4. Add the two like fractions:
    1050/180 + 40/180 = 1050 + 40/180 = 1090/180
  5. 1090/180 simplified gives 109/18
  6. So, 70/12 + 20/90 = 109/18
    In mixed form: 61/18

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