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Add 5/80 and 90/72

1st number: 5/80, 2nd number: 1 18/72

5/80 + 90/72 is 21/16.

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,
    5/80 = 5 × 9/80 × 9 = 45/720
  3. Likewise, for the 2nd fraction, since 72 × 10 = 720,
    90/72 = 90 × 10/72 × 10 = 900/720
  4. Add the two like fractions:
    45/720 + 900/720 = 45 + 900/720 = 945/720
  5. 945/720 simplified gives 21/16
  6. So, 5/80 + 90/72 = 21/16
    In mixed form: 15/16

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