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Add 15/16 and 80/90

15/16 + 80/90 is 263/144.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 90 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 16 × 45 = 720,
    15/16 = 15 × 45/16 × 45 = 675/720
  3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
    80/90 = 80 × 8/90 × 8 = 640/720
  4. Add the two like fractions:
    675/720 + 640/720 = 675 + 640/720 = 1315/720
  5. 1315/720 simplified gives 263/144
  6. So, 15/16 + 80/90 = 263/144
    In mixed form: 1119/144

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