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Add 45/80 and 15/90

45/80 + 15/90 is 35/48.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 80 × 9 = 720,
    45/80 = 45 × 9/80 × 9 = 405/720
  3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
    15/90 = 15 × 8/90 × 8 = 120/720
  4. Add the two like fractions:
    405/720 + 120/720 = 405 + 120/720 = 525/720
  5. 525/720 simplified gives 35/48
  6. So, 45/80 + 15/90 = 35/48

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