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Add 30/80 and 54/72

30/80 + 54/72 is 9/8.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 80 × 9 = 720,
    30/80 = 30 × 9/80 × 9 = 270/720
  3. Likewise, for the 2nd fraction, since 72 × 10 = 720,
    54/72 = 54 × 10/72 × 10 = 540/720
  4. Add the two like fractions:
    270/720 + 540/720 = 270 + 540/720 = 810/720
  5. 810/720 simplified gives 9/8
  6. So, 30/80 + 54/72 = 9/8
    In mixed form: 11/8

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