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Add 72/80 and 1/9

72/80 + 1/9 is 91/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 9 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 80 × 9 = 720,
    72/80 = 72 × 9/80 × 9 = 648/720
  3. Likewise, for the 2nd fraction, since 9 × 80 = 720,
    1/9 = 1 × 80/9 × 80 = 80/720
  4. Add the two like fractions:
    648/720 + 80/720 = 648 + 80/720 = 728/720
  5. 728/720 simplified gives 91/90
  6. So, 72/80 + 1/9 = 91/90
    In mixed form: 11/90

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