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Add 42/56 and 81/84

42/56 + 81/84 is 12/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 84 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 56 × 3 = 168,
    42/56 = 42 × 3/56 × 3 = 126/168
  3. Likewise, for the 2nd fraction, since 84 × 2 = 168,
    81/84 = 81 × 2/84 × 2 = 162/168
  4. Add the two like fractions:
    126/168 + 162/168 = 126 + 162/168 = 288/168
  5. 288/168 simplified gives 12/7
  6. So, 42/56 + 81/84 = 12/7
    In mixed form: 15/7

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