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Add 90/20 and 15/16

1st number: 4 10/20, 2nd number: 15/16

90/20 + 15/16 is 87/16.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 16 is 80
  2. For the 1st fraction, since 20 × 4 = 80,
    90/20 = 90 × 4/20 × 4 = 360/80
  3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
    15/16 = 15 × 5/16 × 5 = 75/80
  4. Add the two fractions:
    360/80 + 75/80 = 360 + 75/80 = 435/80
  5. 435/80 simplified gives 87/16
  6. So, 90/20 + 15/16 = 87/16
    In mixed form: 57/16

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