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Add 84/90 and 28/80

84/90 + 28/80 is 77/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 90 × 8 = 720,
    84/90 = 84 × 8/90 × 8 = 672/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    28/80 = 28 × 9/80 × 9 = 252/720
  4. Add the two like fractions:
    672/720 + 252/720 = 672 + 252/720 = 924/720
  5. 924/720 simplified gives 77/60
  6. So, 84/90 + 28/80 = 77/60
    In mixed form: 117/60

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