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Add 90/72 and 5/81

1st number: 1 18/72, 2nd number: 5/81

90/72 + 5/81 is 425/324.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 81 is 648
  2. For the 1st fraction, since 72 × 9 = 648,
    90/72 = 90 × 9/72 × 9 = 810/648
  3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
    5/81 = 5 × 8/81 × 8 = 40/648
  4. Add the two fractions:
    810/648 + 40/648 = 810 + 40/648 = 850/648
  5. 850/648 simplified gives 425/324
  6. So, 90/72 + 5/81 = 425/324
    In mixed form: 1101/324

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