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Add 18/90 and 15/16

18/90 + 15/16 is 91/80.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 16 is 720
  2. For the 1st fraction, since 90 × 8 = 720,
    18/90 = 18 × 8/90 × 8 = 144/720
  3. Likewise, for the 2nd fraction, since 16 × 45 = 720,
    15/16 = 15 × 45/16 × 45 = 675/720
  4. Add the two fractions:
    144/720 + 675/720 = 144 + 675/720 = 819/720
  5. 819/720 simplified gives 91/80
  6. So, 18/90 + 15/16 = 91/80
    In mixed form: 111/80

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