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Add 20/56 and 42/70

20/56 + 42/70 is 67/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 70 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 56 × 5 = 280,
    20/56 = 20 × 5/56 × 5 = 100/280
  3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
    42/70 = 42 × 4/70 × 4 = 168/280
  4. Add the two like fractions:
    100/280 + 168/280 = 100 + 168/280 = 268/280
  5. 268/280 simplified gives 67/70
  6. So, 20/56 + 42/70 = 67/70

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