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Add 10/21 and 42/64

10/21 + 42/64 is 761/672.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 64 is 1344

    Next, find the equivalent fraction of both fractional numbers with denominator 1344
  2. For the 1st fraction, since 21 × 64 = 1344,
    10/21 = 10 × 64/21 × 64 = 640/1344
  3. Likewise, for the 2nd fraction, since 64 × 21 = 1344,
    42/64 = 42 × 21/64 × 21 = 882/1344
  4. Add the two like fractions:
    640/1344 + 882/1344 = 640 + 882/1344 = 1522/1344
  5. 1522/1344 simplified gives 761/672
  6. So, 10/21 + 42/64 = 761/672
    In mixed form: 189/672

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