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Add 15/20 and 9/16

15/20 + 9/16 is 21/16.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 16 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 20 × 4 = 80,
    15/20 = 15 × 4/20 × 4 = 60/80
  3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
    9/16 = 9 × 5/16 × 5 = 45/80
  4. Add the two like fractions:
    60/80 + 45/80 = 60 + 45/80 = 105/80
  5. 105/80 simplified gives 21/16
  6. So, 15/20 + 9/16 = 21/16
    In mixed form: 15/16

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