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Add 80/12 and 4/90

1st number: 6 8/12, 2nd number: 4/90

80/12 + 4/90 is 302/45.

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,
    80/12 = 80 × 15/12 × 15 = 1200/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    4/90 = 4 × 2/90 × 2 = 8/180
  4. Add the two like fractions:
    1200/180 + 8/180 = 1200 + 8/180 = 1208/180
  5. 1208/180 simplified gives 302/45
  6. So, 80/12 + 4/90 = 302/45
    In mixed form: 632/45

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