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Add 28/72 and 70/80

28/72 + 70/80 is 91/72.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 72 × 10 = 720,
    28/72 = 28 × 10/72 × 10 = 280/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    70/80 = 70 × 9/80 × 9 = 630/720
  4. Add the two like fractions:
    280/720 + 630/720 = 280 + 630/720 = 910/720
  5. 910/720 simplified gives 91/72
  6. So, 28/72 + 70/80 = 91/72
    In mixed form: 119/72

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