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Add 42/56 and 42/70

42/56 + 42/70 is 27/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 70 is 280
  2. For the 1st fraction, since 56 × 5 = 280,
    42/56 = 42 × 5/56 × 5 = 210/280
  3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
    42/70 = 42 × 4/70 × 4 = 168/280
  4. Add the two fractions:
    210/280 + 168/280 = 210 + 168/280 = 378/280
  5. 378/280 simplified gives 27/20
  6. So, 42/56 + 42/70 = 27/20
    In mixed form: 17/20

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