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Add 28/80 and 9/10

28/80 + 9/10 is 5/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 10 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 80 × 1 = 80,
    28/80 = 28 × 1/80 × 1 = 28/80
  3. Likewise, for the 2nd fraction, since 10 × 8 = 80,
    9/10 = 9 × 8/10 × 8 = 72/80
  4. Add the two like fractions:
    28/80 + 72/80 = 28 + 72/80 = 100/80
  5. 100/80 simplified gives 5/4
  6. So, 28/80 + 9/10 = 5/4
    In mixed form: 11/4

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