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Add 45/72 and 48/80

45/72 + 48/80 is 49/40.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 72 × 10 = 720,
    45/72 = 45 × 10/72 × 10 = 450/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    48/80 = 48 × 9/80 × 9 = 432/720
  4. Add the two like fractions:
    450/720 + 432/720 = 450 + 432/720 = 882/720
  5. 882/720 simplified gives 49/40
  6. So, 45/72 + 48/80 = 49/40
    In mixed form: 19/40

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