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Add 56/84 and 20/42

56/84 + 20/42 is 8/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 42 is 84
  2. For the 1st fraction, since 84 × 1 = 84,
    56/84 = 56 × 1/84 × 1 = 56/84
  3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
    20/42 = 20 × 2/42 × 2 = 40/84
  4. Add the two fractions:
    56/84 + 40/84 = 56 + 40/84 = 96/84
  5. 96/84 simplified gives 8/7
  6. So, 56/84 + 20/42 = 8/7
    In mixed form: 11/7

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