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Add 4/40 and 21/64

4/40 + 21/64 is 137/320.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 64 is 320

    Next, find the equivalent fraction of both fractional numbers with denominator 320
  2. For the 1st fraction, since 40 × 8 = 320,
    4/40 = 4 × 8/40 × 8 = 32/320
  3. Likewise, for the 2nd fraction, since 64 × 5 = 320,
    21/64 = 21 × 5/64 × 5 = 105/320
  4. Add the two like fractions:
    32/320 + 105/320 = 32 + 105/320 = 137/320
  5. So, 4/40 + 21/64 = 137/320

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