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Add 15/21 and 21/96

15/21 + 21/96 is 209/224.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 96 is 672

    Next, find the equivalent fraction of both fractional numbers with denominator 672
  2. For the 1st fraction, since 21 × 32 = 672,
    15/21 = 15 × 32/21 × 32 = 480/672
  3. Likewise, for the 2nd fraction, since 96 × 7 = 672,
    21/96 = 21 × 7/96 × 7 = 147/672
  4. Add the two like fractions:
    480/672 + 147/672 = 480 + 147/672 = 627/672
  5. 627/672 simplified gives 209/224
  6. So, 15/21 + 21/96 = 209/224

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