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Add 21/42 and 6/8

21/42 + 6/8 is 5/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 8 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 42 × 4 = 168,
    21/42 = 21 × 4/42 × 4 = 84/168
  3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
    6/8 = 6 × 21/8 × 21 = 126/168
  4. Add the two like fractions:
    84/168 + 126/168 = 84 + 126/168 = 210/168
  5. 210/168 simplified gives 5/4
  6. So, 21/42 + 6/8 = 5/4
    In mixed form: 11/4

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