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Add 45/90 and 63/80

45/90 + 63/80 is 103/80.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 90 × 8 = 720,
    45/90 = 45 × 8/90 × 8 = 360/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    63/80 = 63 × 9/80 × 9 = 567/720
  4. Add the two like fractions:
    360/720 + 567/720 = 360 + 567/720 = 927/720
  5. 927/720 simplified gives 103/80
  6. So, 45/90 + 63/80 = 103/80
    In mixed form: 123/80

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