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Add 90/80 and 9/40

1st number: 1 10/80, 2nd number: 9/40

90/80 + 9/40 is 27/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 40 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 80 × 1 = 80,
    90/80 = 90 × 1/80 × 1 = 90/80
  3. Likewise, for the 2nd fraction, since 40 × 2 = 80,
    9/40 = 9 × 2/40 × 2 = 18/80
  4. Add the two like fractions:
    90/80 + 18/80 = 90 + 18/80 = 108/80
  5. 108/80 simplified gives 27/20
  6. So, 90/80 + 9/40 = 27/20
    In mixed form: 17/20

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