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Add 21/15 and 54/16

1st number: 1 6/15, 2nd number: 3 6/16

21/15 + 54/16 is 191/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 16 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 15 × 16 = 240,
    21/15 = 21 × 16/15 × 16 = 336/240
  3. Likewise, for the 2nd fraction, since 16 × 15 = 240,
    54/16 = 54 × 15/16 × 15 = 810/240
  4. Add the two like fractions:
    336/240 + 810/240 = 336 + 810/240 = 1146/240
  5. 1146/240 simplified gives 191/40
  6. So, 21/15 + 54/16 = 191/40
    In mixed form: 431/40

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