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Add 12/56 and 42/70

12/56 + 42/70 is 57/70.

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,
    12/56 = 12 × 5/56 × 5 = 60/280
  3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
    42/70 = 42 × 4/70 × 4 = 168/280
  4. Add the two fractions:
    60/280 + 168/280 = 60 + 168/280 = 228/280
  5. 228/280 simplified gives 57/70
  6. So, 12/56 + 42/70 = 57/70

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