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Add 21/72 and 7/64

21/72 + 7/64 is 77/192.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 64 is 576

    Next, find the equivalent fraction of both fractional numbers with denominator 576
  2. For the 1st fraction, since 72 × 8 = 576,
    21/72 = 21 × 8/72 × 8 = 168/576
  3. Likewise, for the 2nd fraction, since 64 × 9 = 576,
    7/64 = 7 × 9/64 × 9 = 63/576
  4. Add the two like fractions:
    168/576 + 63/576 = 168 + 63/576 = 231/576
  5. 231/576 simplified gives 77/192
  6. So, 21/72 + 7/64 = 77/192

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