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Add 3/7 and 21/64

3/7 + 21/64 is 339/448.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 64 is 448

    Next, find the equivalent fraction of both fractional numbers with denominator 448
  2. For the 1st fraction, since 7 × 64 = 448,
    3/7 = 3 × 64/7 × 64 = 192/448
  3. Likewise, for the 2nd fraction, since 64 × 7 = 448,
    21/64 = 21 × 7/64 × 7 = 147/448
  4. Add the two like fractions:
    192/448 + 147/448 = 192 + 147/448 = 339/448
  5. So, 3/7 + 21/64 = 339/448

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