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Add 20/64 and 42/70

20/64 + 42/70 is 73/80.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 2240
  2. For the 1st fraction, since 64 × 35 = 2240,
    20/64 = 20 × 35/64 × 35 = 700/2240
  3. Likewise, for the 2nd fraction, since 70 × 32 = 2240,
    42/70 = 42 × 32/70 × 32 = 1344/2240
  4. Add the two like fractions:
    700/2240 + 1344/2240 = 700 + 1344/2240 = 2044/2240
  5. 2044/2240 simplified gives 73/80
  6. So, 20/64 + 42/70 = 73/80

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