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Add 90/80 and 9/12

1st number: 1 10/80, 2nd number: 9/12

90/80 + 9/12 is 15/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 12 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 80 × 3 = 240,
    90/80 = 90 × 3/80 × 3 = 270/240
  3. Likewise, for the 2nd fraction, since 12 × 20 = 240,
    9/12 = 9 × 20/12 × 20 = 180/240
  4. Add the two like fractions:
    270/240 + 180/240 = 270 + 180/240 = 450/240
  5. 450/240 simplified gives 15/8
  6. So, 90/80 + 9/12 = 15/8
    In mixed form: 17/8

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