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Add 28/70 and 42/64

28/70 + 42/64 is 169/160.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 64 is 2240

    Next, find the equivalent fraction of both fractional numbers with denominator 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,
    42/64 = 42 × 35/64 × 35 = 1470/2240
  4. Add the two like fractions:
    896/2240 + 1470/2240 = 896 + 1470/2240 = 2366/2240
  5. 2366/2240 simplified gives 169/160
  6. So, 28/70 + 42/64 = 169/160
    In mixed form: 19/160

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