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Add 72/80 and 7/90

72/80 + 7/90 is 44/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 90 is 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 90 × 8 = 720,
    7/90 = 7 × 8/90 × 8 = 56/720
  4. Add the two fractions:
    648/720 + 56/720 = 648 + 56/720 = 704/720
  5. After reducing the fraction, the answer is 44/45

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