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Add 28/70 and 15/64

28/70 + 15/64 is 203/320.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 64 is 2240
  2. For the 1st fraction, since 70 × 32 = 2240,
    28/70 = 28 × 32/70 × 32 = 896/2240
  3. Likewise, for the 2nd fraction, since 64 × 35 = 2240,
    15/64 = 15 × 35/64 × 35 = 525/2240
  4. Add the two fractions:
    896/2240 + 525/2240 = 896 + 525/2240 = 1421/2240
  5. After reducing the fraction, the answer is 203/320

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